Home / 16,487.18-22,755.75-15,158.78

Finding the Fourth Proportional to 16,487.18, 22,755.75 and 15,158.78

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Solution

The fourth proportional to 16,487.18, 22,755.75 and 15,158.78 is: 20,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,487.18 : 22,755.75 = 15,158.78 : x
  2. Step 2: Convert to fraction form
    16,487.18/22,755.75 = 15,158.78/x
  3. Step 3: Cross multiply
    16,487.18x = 22,755.75 × 15,158.78
  4. Step 4: Simplify right side
    16,487.18x = 344,949,408.03
  5. Step 5: Solve for x
    x = 344,949,408.03/16,487.18
  6. Step 6: Final answer
    x = 20,922.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.