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Finding the Fourth Proportional to 8,995.20, 13,492.80 and 8,339.10

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Solution

The fourth proportional to 8,995.20, 13,492.80 and 8,339.10 is: 12,508.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.20 : 13,492.80 = 8,339.10 : x
  2. Step 2: Convert to fraction form
    8,995.20/13,492.80 = 8,339.10/x
  3. Step 3: Cross multiply
    8,995.20x = 13,492.80 × 8,339.10
  4. Step 4: Simplify right side
    8,995.20x = 112,517,808.48
  5. Step 5: Solve for x
    x = 112,517,808.48/8,995.20
  6. Step 6: Final answer
    x = 12,508.65

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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.