Home / 12,321,146.10-18,481,719.15-9,132,500.10

Finding the Fourth Proportional to 12,321,146.10, 18,481,719.15 and 9,132,500.10

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Solution

The fourth proportional to 12,321,146.10, 18,481,719.15 and 9,132,500.10 is: 13,698,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321,146.10 : 18,481,719.15 = 9,132,500.10 : x
  2. Step 2: Convert to fraction form
    12,321,146.10/18,481,719.15 = 9,132,500.10/x
  3. Step 3: Cross multiply
    12,321,146.10x = 18,481,719.15 × 9,132,500.10
  4. Step 4: Simplify right side
    12,321,146.10x = 168,784,301,985,546.91
  5. Step 5: Solve for x
    x = 168,784,301,985,546.91/12,321,146.10
  6. Step 6: Final answer
    x = 13,698,750.15

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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.