Home / 10,129.47-15,144.27-8,586.73

Finding the Fourth Proportional to 10,129.47, 15,144.27 and 8,586.73

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Solution

The fourth proportional to 10,129.47, 15,144.27 and 8,586.73 is: 12,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.47 : 15,144.27 = 8,586.73 : x
  2. Step 2: Convert to fraction form
    10,129.47/15,144.27 = 8,586.73/x
  3. Step 3: Cross multiply
    10,129.47x = 15,144.27 × 8,586.73
  4. Step 4: Simplify right side
    10,129.47x = 130,039,757.54
  5. Step 5: Solve for x
    x = 130,039,757.54/10,129.47
  6. Step 6: Final answer
    x = 12,837.77

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Double scale
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1.5x scale

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.