Home / 9,905.20-14,857.80-9,249.10

Finding the Fourth Proportional to 9,905.20, 14,857.80 and 9,249.10

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Solution

The fourth proportional to 9,905.20, 14,857.80 and 9,249.10 is: 13,873.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.20 : 14,857.80 = 9,249.10 : x
  2. Step 2: Convert to fraction form
    9,905.20/14,857.80 = 9,249.10/x
  3. Step 3: Cross multiply
    9,905.20x = 14,857.80 × 9,249.10
  4. Step 4: Simplify right side
    9,905.20x = 137,421,277.98
  5. Step 5: Solve for x
    x = 137,421,277.98/9,905.20
  6. Step 6: Final answer
    x = 13,873.65

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