Home / 12,145,854.30-18,218,781.45-4,954,998.30

Finding the Fourth Proportional to 12,145,854.30, 18,218,781.45 and 4,954,998.30

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Solution

The fourth proportional to 12,145,854.30, 18,218,781.45 and 4,954,998.30 is: 7,432,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,854.30 : 18,218,781.45 = 4,954,998.30 : x
  2. Step 2: Convert to fraction form
    12,145,854.30/18,218,781.45 = 4,954,998.30/x
  3. Step 3: Cross multiply
    12,145,854.30x = 18,218,781.45 × 4,954,998.30
  4. Step 4: Simplify right side
    12,145,854.30x = 90,274,031,112,821.53
  5. Step 5: Solve for x
    x = 90,274,031,112,821.53/12,145,854.30
  6. Step 6: Final answer
    x = 7,432,497.45

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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.