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Finding the Fourth Proportional to 10,990.15, 15,160.57 and 8,333.17

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Solution

The fourth proportional to 10,990.15, 15,160.57 and 8,333.17 is: 11,495.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.15 : 15,160.57 = 8,333.17 : x
  2. Step 2: Convert to fraction form
    10,990.15/15,160.57 = 8,333.17/x
  3. Step 3: Cross multiply
    10,990.15x = 15,160.57 × 8,333.17
  4. Step 4: Simplify right side
    10,990.15x = 126,335,607.11
  5. Step 5: Solve for x
    x = 126,335,607.11/10,990.15
  6. Step 6: Final answer
    x = 11,495.35

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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.