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Finding the Fourth Proportional to 15,046.56, 20,763.90 and 8,331.84

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Solution

The fourth proportional to 15,046.56, 20,763.90 and 8,331.84 is: 11,497.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,046.56 : 20,763.90 = 8,331.84 : x
  2. Step 2: Convert to fraction form
    15,046.56/20,763.90 = 8,331.84/x
  3. Step 3: Cross multiply
    15,046.56x = 20,763.90 × 8,331.84
  4. Step 4: Simplify right side
    15,046.56x = 173,001,492.58
  5. Step 5: Solve for x
    x = 173,001,492.58/15,046.56
  6. Step 6: Final answer
    x = 11,497.74

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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.