Home / 31,715.29-47,578.43-10,657.39

Finding the Fourth Proportional to 31,715.29, 47,578.43 and 10,657.39

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Solution

The fourth proportional to 31,715.29, 47,578.43 and 10,657.39 is: 15,987.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,715.29 : 47,578.43 = 10,657.39 : x
  2. Step 2: Convert to fraction form
    31,715.29/47,578.43 = 10,657.39/x
  3. Step 3: Cross multiply
    31,715.29x = 47,578.43 × 10,657.39
  4. Step 4: Simplify right side
    31,715.29x = 507,061,646.21
  5. Step 5: Solve for x
    x = 507,061,646.21/31,715.29
  6. Step 6: Final answer
    x = 15,987.92

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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.