Home / 12,139.53-16,757.25-9,487.79

Finding the Fourth Proportional to 12,139.53, 16,757.25 and 9,487.79

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Solution

The fourth proportional to 12,139.53, 16,757.25 and 9,487.79 is: 13,096.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.53 : 16,757.25 = 9,487.79 : x
  2. Step 2: Convert to fraction form
    12,139.53/16,757.25 = 9,487.79/x
  3. Step 3: Cross multiply
    12,139.53x = 16,757.25 × 9,487.79
  4. Step 4: Simplify right side
    12,139.53x = 158,989,268.98
  5. Step 5: Solve for x
    x = 158,989,268.98/12,139.53
  6. Step 6: Final answer
    x = 13,096.83

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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.