Home / 39,938.96-59,913.76-13,636.64

Finding the Fourth Proportional to 39,938.96, 59,913.76 and 13,636.64

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Solution

The fourth proportional to 39,938.96, 59,913.76 and 13,636.64 is: 20,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,938.96 : 59,913.76 = 13,636.64 : x
  2. Step 2: Convert to fraction form
    39,938.96/59,913.76 = 13,636.64/x
  3. Step 3: Cross multiply
    39,938.96x = 59,913.76 × 13,636.64
  4. Step 4: Simplify right side
    39,938.96x = 817,022,376.17
  5. Step 5: Solve for x
    x = 817,022,376.17/39,938.96
  6. Step 6: Final answer
    x = 20,456.78

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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.