Home / 39,824.16-59,729.28-12,115.68

Finding the Fourth Proportional to 39,824.16, 59,729.28 and 12,115.68

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Solution

The fourth proportional to 39,824.16, 59,729.28 and 12,115.68 is: 18,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,824.16 : 59,729.28 = 12,115.68 : x
  2. Step 2: Convert to fraction form
    39,824.16/59,729.28 = 12,115.68/x
  3. Step 3: Cross multiply
    39,824.16x = 59,729.28 × 12,115.68
  4. Step 4: Simplify right side
    39,824.16x = 723,660,843.11
  5. Step 5: Solve for x
    x = 723,660,843.11/39,824.16
  6. Step 6: Final answer
    x = 18,171.40

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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.