Home / 39,812.78-59,720.80-13,517.76

Finding the Fourth Proportional to 39,812.78, 59,720.80 and 13,517.76

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Solution

The fourth proportional to 39,812.78, 59,720.80 and 13,517.76 is: 20,277.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,812.78 : 59,720.80 = 13,517.76 : x
  2. Step 2: Convert to fraction form
    39,812.78/59,720.80 = 13,517.76/x
  3. Step 3: Cross multiply
    39,812.78x = 59,720.80 × 13,517.76
  4. Step 4: Simplify right side
    39,812.78x = 807,291,441.41
  5. Step 5: Solve for x
    x = 807,291,441.41/39,812.78
  6. Step 6: Final answer
    x = 20,277.19

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1.5x scale

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.