Home / 20,721,141,386.40-31,081,712,079.60-14,109,165,040.80

Finding the Fourth Proportional to 20,721,141,386.40, 31,081,712,079.60 and 14,109,165,040.80

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Solution

The fourth proportional to 20,721,141,386.40, 31,081,712,079.60 and 14,109,165,040.80 is: 21,163,747,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,141,386.40 : 31,081,712,079.60 = 14,109,165,040.80 : x
  2. Step 2: Convert to fraction form
    20,721,141,386.40/31,081,712,079.60 = 14,109,165,040.80/x
  3. Step 3: Cross multiply
    20,721,141,386.40x = 31,081,712,079.60 × 14,109,165,040.80
  4. Step 4: Simplify right side
    20,721,141,386.40x = 438,537,005,481,703,309,312
  5. Step 5: Solve for x
    x = 438,537,005,481,703,309,312/20,721,141,386.40
  6. Step 6: Final answer
    x = 21,163,747,561.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.