Home / 15,428.33-21,291.07-8,354.73

Finding the Fourth Proportional to 15,428.33, 21,291.07 and 8,354.73

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Solution

The fourth proportional to 15,428.33, 21,291.07 and 8,354.73 is: 11,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.33 : 21,291.07 = 8,354.73 : x
  2. Step 2: Convert to fraction form
    15,428.33/21,291.07 = 8,354.73/x
  3. Step 3: Cross multiply
    15,428.33x = 21,291.07 × 8,354.73
  4. Step 4: Simplify right side
    15,428.33x = 177,881,099.49
  5. Step 5: Solve for x
    x = 177,881,099.49/15,428.33
  6. Step 6: Final answer
    x = 11,529.51

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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.