Home / 15,520.26-21,417.84-8,446.71

Finding the Fourth Proportional to 15,520.26, 21,417.84 and 8,446.71

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Solution

The fourth proportional to 15,520.26, 21,417.84 and 8,446.71 is: 11,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,520.26 : 21,417.84 = 8,446.71 : x
  2. Step 2: Convert to fraction form
    15,520.26/21,417.84 = 8,446.71/x
  3. Step 3: Cross multiply
    15,520.26x = 21,417.84 × 8,446.71
  4. Step 4: Simplify right side
    15,520.26x = 180,910,283.31
  5. Step 5: Solve for x
    x = 180,910,283.31/15,520.26
  6. Step 6: Final answer
    x = 11,656.40

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Half scale
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Double scale
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Similar ratio
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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.