Home / 20,739,969.40-31,109,954.10-19,480,257.40

Finding the Fourth Proportional to 20,739,969.40, 31,109,954.10 and 19,480,257.40

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Solution

The fourth proportional to 20,739,969.40, 31,109,954.10 and 19,480,257.40 is: 29,220,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,969.40 : 31,109,954.10 = 19,480,257.40 : x
  2. Step 2: Convert to fraction form
    20,739,969.40/31,109,954.10 = 19,480,257.40/x
  3. Step 3: Cross multiply
    20,739,969.40x = 31,109,954.10 × 19,480,257.40
  4. Step 4: Simplify right side
    20,739,969.40x = 606,029,913,570,185.38
  5. Step 5: Solve for x
    x = 606,029,913,570,185.38/20,739,969.40
  6. Step 6: Final answer
    x = 29,220,386.10

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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.