Home / 15,417.27-21,275.90-8,343.69

Finding the Fourth Proportional to 15,417.27, 21,275.90 and 8,343.69

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Solution

The fourth proportional to 15,417.27, 21,275.90 and 8,343.69 is: 11,514.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.27 : 21,275.90 = 8,343.69 : x
  2. Step 2: Convert to fraction form
    15,417.27/21,275.90 = 8,343.69/x
  3. Step 3: Cross multiply
    15,417.27x = 21,275.90 × 8,343.69
  4. Step 4: Simplify right side
    15,417.27x = 177,519,472.35
  5. Step 5: Solve for x
    x = 177,519,472.35/15,417.27
  6. Step 6: Final answer
    x = 11,514.33

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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.