Home / 15,496.76-21,385.66-8,423.20

Finding the Fourth Proportional to 15,496.76, 21,385.66 and 8,423.20

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Solution

The fourth proportional to 15,496.76, 21,385.66 and 8,423.20 is: 11,624.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.76 : 21,385.66 = 8,423.20 : x
  2. Step 2: Convert to fraction form
    15,496.76/21,385.66 = 8,423.20/x
  3. Step 3: Cross multiply
    15,496.76x = 21,385.66 × 8,423.20
  4. Step 4: Simplify right side
    15,496.76x = 180,135,691.31
  5. Step 5: Solve for x
    x = 180,135,691.31/15,496.76
  6. Step 6: Final answer
    x = 11,624.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.