Home / 10,115.91-15,176.81-4,191.71

Finding the Fourth Proportional to 10,115.91, 15,176.81 and 4,191.71

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Solution

The fourth proportional to 10,115.91, 15,176.81 and 4,191.71 is: 6,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.91 : 15,176.81 = 4,191.71 : x
  2. Step 2: Convert to fraction form
    10,115.91/15,176.81 = 4,191.71/x
  3. Step 3: Cross multiply
    10,115.91x = 15,176.81 × 4,191.71
  4. Step 4: Simplify right side
    10,115.91x = 63,616,720.84
  5. Step 5: Solve for x
    x = 63,616,720.84/10,115.91
  6. Step 6: Final answer
    x = 6,288.78

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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.