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Finding the Fourth Proportional to 9,612.10, 14,418.15 and 8,810.20

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Solution

The fourth proportional to 9,612.10, 14,418.15 and 8,810.20 is: 13,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,612.10 : 14,418.15 = 8,810.20 : x
  2. Step 2: Convert to fraction form
    9,612.10/14,418.15 = 8,810.20/x
  3. Step 3: Cross multiply
    9,612.10x = 14,418.15 × 8,810.20
  4. Step 4: Simplify right side
    9,612.10x = 127,026,785.13
  5. Step 5: Solve for x
    x = 127,026,785.13/9,612.10
  6. Step 6: Final answer
    x = 13,215.30

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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.