Home / 15,502.48-21,393.26-8,428.76

Finding the Fourth Proportional to 15,502.48, 21,393.26 and 8,428.76

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Solution

The fourth proportional to 15,502.48, 21,393.26 and 8,428.76 is: 11,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.48 : 21,393.26 = 8,428.76 : x
  2. Step 2: Convert to fraction form
    15,502.48/21,393.26 = 8,428.76/x
  3. Step 3: Cross multiply
    15,502.48x = 21,393.26 × 8,428.76
  4. Step 4: Simplify right side
    15,502.48x = 180,318,654.16
  5. Step 5: Solve for x
    x = 180,318,654.16/15,502.48
  6. Step 6: Final answer
    x = 11,631.60

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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.