Home / 10,937.70-15,059.43-9,939.96

Finding the Fourth Proportional to 10,937.70, 15,059.43 and 9,939.96

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Solution

The fourth proportional to 10,937.70, 15,059.43 and 9,939.96 is: 13,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,937.70 : 15,059.43 = 9,939.96 : x
  2. Step 2: Convert to fraction form
    10,937.70/15,059.43 = 9,939.96/x
  3. Step 3: Cross multiply
    10,937.70x = 15,059.43 × 9,939.96
  4. Step 4: Simplify right side
    10,937.70x = 149,690,131.82
  5. Step 5: Solve for x
    x = 149,690,131.82/10,937.70
  6. Step 6: Final answer
    x = 13,685.70

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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.