Home / 39,940.28-59,917.50-13,638.86

Finding the Fourth Proportional to 39,940.28, 59,917.50 and 13,638.86

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Solution

The fourth proportional to 39,940.28, 59,917.50 and 13,638.86 is: 20,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.28 : 59,917.50 = 13,638.86 : x
  2. Step 2: Convert to fraction form
    39,940.28/59,917.50 = 13,638.86/x
  3. Step 3: Cross multiply
    39,940.28x = 59,917.50 × 13,638.86
  4. Step 4: Simplify right side
    39,940.28x = 817,206,094.46
  5. Step 5: Solve for x
    x = 817,206,094.46/39,940.28
  6. Step 6: Final answer
    x = 20,460.70

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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.