Home / 20,781,696.60-31,119,400.80-15,360,998.40

Finding the Fourth Proportional to 20,781,696.60, 31,119,400.80 and 15,360,998.40

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Solution

The fourth proportional to 20,781,696.60, 31,119,400.80 and 15,360,998.40 is: 23,002,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,696.60 : 31,119,400.80 = 15,360,998.40 : x
  2. Step 2: Convert to fraction form
    20,781,696.60/31,119,400.80 = 15,360,998.40/x
  3. Step 3: Cross multiply
    20,781,696.60x = 31,119,400.80 × 15,360,998.40
  4. Step 4: Simplify right side
    20,781,696.60x = 478,025,065,897,758.75
  5. Step 5: Solve for x
    x = 478,025,065,897,758.75/20,781,696.60
  6. Step 6: Final answer
    x = 23,002,215.61

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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.