Home / 8,172,002.10-12,258,003.15-5,193,390.90

Finding the Fourth Proportional to 8,172,002.10, 12,258,003.15 and 5,193,390.90

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Solution

The fourth proportional to 8,172,002.10, 12,258,003.15 and 5,193,390.90 is: 7,790,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172,002.10 : 12,258,003.15 = 5,193,390.90 : x
  2. Step 2: Convert to fraction form
    8,172,002.10/12,258,003.15 = 5,193,390.90/x
  3. Step 3: Cross multiply
    8,172,002.10x = 12,258,003.15 × 5,193,390.90
  4. Step 4: Simplify right side
    8,172,002.10x = 63,660,602,011,381.34
  5. Step 5: Solve for x
    x = 63,660,602,011,381.34/8,172,002.10
  6. Step 6: Final answer
    x = 7,790,086.35

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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.