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Finding the Fourth Proportional to 10,091.10, 15,136.65 and 7,901.70

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Solution

The fourth proportional to 10,091.10, 15,136.65 and 7,901.70 is: 11,852.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.10 : 15,136.65 = 7,901.70 : x
  2. Step 2: Convert to fraction form
    10,091.10/15,136.65 = 7,901.70/x
  3. Step 3: Cross multiply
    10,091.10x = 15,136.65 × 7,901.70
  4. Step 4: Simplify right side
    10,091.10x = 119,605,267.31
  5. Step 5: Solve for x
    x = 119,605,267.31/10,091.10
  6. Step 6: Final answer
    x = 11,852.55

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.