Home / 10,191.92-15,292.26-5,515.20

Finding the Fourth Proportional to 10,191.92, 15,292.26 and 5,515.20

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Solution

The fourth proportional to 10,191.92, 15,292.26 and 5,515.20 is: 8,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191.92 : 15,292.26 = 5,515.20 : x
  2. Step 2: Convert to fraction form
    10,191.92/15,292.26 = 5,515.20/x
  3. Step 3: Cross multiply
    10,191.92x = 15,292.26 × 5,515.20
  4. Step 4: Simplify right side
    10,191.92x = 84,339,872.35
  5. Step 5: Solve for x
    x = 84,339,872.35/10,191.92
  6. Step 6: Final answer
    x = 8,275.17

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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.