Home / 10,081.68-15,125.59-5,154.78

Finding the Fourth Proportional to 10,081.68, 15,125.59 and 5,154.78

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Solution

The fourth proportional to 10,081.68, 15,125.59 and 5,154.78 is: 7,733.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.68 : 15,125.59 = 5,154.78 : x
  2. Step 2: Convert to fraction form
    10,081.68/15,125.59 = 5,154.78/x
  3. Step 3: Cross multiply
    10,081.68x = 15,125.59 × 5,154.78
  4. Step 4: Simplify right side
    10,081.68x = 77,969,024.36
  5. Step 5: Solve for x
    x = 77,969,024.36/10,081.68
  6. Step 6: Final answer
    x = 7,733.74

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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.