Home / 10,115.28-15,169.68-4,272.48

Finding the Fourth Proportional to 10,115.28, 15,169.68 and 4,272.48

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Solution

The fourth proportional to 10,115.28, 15,169.68 and 4,272.48 is: 6,407.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.28 : 15,169.68 = 4,272.48 : x
  2. Step 2: Convert to fraction form
    10,115.28/15,169.68 = 4,272.48/x
  3. Step 3: Cross multiply
    10,115.28x = 15,169.68 × 4,272.48
  4. Step 4: Simplify right side
    10,115.28x = 64,812,154.41
  5. Step 5: Solve for x
    x = 64,812,154.41/10,115.28
  6. Step 6: Final answer
    x = 6,407.35

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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.