Home / 20,128,524.30-30,192,786.45-12,948,165.90

Finding the Fourth Proportional to 20,128,524.30, 30,192,786.45 and 12,948,165.90

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Solution

The fourth proportional to 20,128,524.30, 30,192,786.45 and 12,948,165.90 is: 19,422,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,524.30 : 30,192,786.45 = 12,948,165.90 : x
  2. Step 2: Convert to fraction form
    20,128,524.30/30,192,786.45 = 12,948,165.90/x
  3. Step 3: Cross multiply
    20,128,524.30x = 30,192,786.45 × 12,948,165.90
  4. Step 4: Simplify right side
    20,128,524.30x = 390,941,207,937,872.06
  5. Step 5: Solve for x
    x = 390,941,207,937,872.06/20,128,524.30
  6. Step 6: Final answer
    x = 19,422,248.85

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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.