Home / 21,291,387.40-31,941,746.70-6,912,008.20

Finding the Fourth Proportional to 21,291,387.40, 31,941,746.70 and 6,912,008.20

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Solution

The fourth proportional to 21,291,387.40, 31,941,746.70 and 6,912,008.20 is: 10,369,526.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,387.40 : 31,941,746.70 = 6,912,008.20 : x
  2. Step 2: Convert to fraction form
    21,291,387.40/31,941,746.70 = 6,912,008.20/x
  3. Step 3: Cross multiply
    21,291,387.40x = 31,941,746.70 × 6,912,008.20
  4. Step 4: Simplify right side
    21,291,387.40x = 220,781,615,112,722.94
  5. Step 5: Solve for x
    x = 220,781,615,112,722.94/21,291,387.40
  6. Step 6: Final answer
    x = 10,369,526.93

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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.