Home / 13,490.76-18,572.20-10,127.92

Finding the Fourth Proportional to 13,490.76, 18,572.20 and 10,127.92

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Solution

The fourth proportional to 13,490.76, 18,572.20 and 10,127.92 is: 13,942.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.76 : 18,572.20 = 10,127.92 : x
  2. Step 2: Convert to fraction form
    13,490.76/18,572.20 = 10,127.92/x
  3. Step 3: Cross multiply
    13,490.76x = 18,572.20 × 10,127.92
  4. Step 4: Simplify right side
    13,490.76x = 188,097,755.82
  5. Step 5: Solve for x
    x = 188,097,755.82/13,490.76
  6. Step 6: Final answer
    x = 13,942.71

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Double scale
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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.