Home / 15,221.83-21,006.54-8,508.19

Finding the Fourth Proportional to 15,221.83, 21,006.54 and 8,508.19

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Solution

The fourth proportional to 15,221.83, 21,006.54 and 8,508.19 is: 11,741.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.83 : 21,006.54 = 8,508.19 : x
  2. Step 2: Convert to fraction form
    15,221.83/21,006.54 = 8,508.19/x
  3. Step 3: Cross multiply
    15,221.83x = 21,006.54 × 8,508.19
  4. Step 4: Simplify right side
    15,221.83x = 178,727,633.56
  5. Step 5: Solve for x
    x = 178,727,633.56/15,221.83
  6. Step 6: Final answer
    x = 11,741.53

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Half scale
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Double scale
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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.