Home / 19,782,002.20-29,673,003.30-12,129,251.80

Finding the Fourth Proportional to 19,782,002.20, 29,673,003.30 and 12,129,251.80

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Solution

The fourth proportional to 19,782,002.20, 29,673,003.30 and 12,129,251.80 is: 18,193,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782,002.20 : 29,673,003.30 = 12,129,251.80 : x
  2. Step 2: Convert to fraction form
    19,782,002.20/29,673,003.30 = 12,129,251.80/x
  3. Step 3: Cross multiply
    19,782,002.20x = 29,673,003.30 × 12,129,251.80
  4. Step 4: Simplify right side
    19,782,002.20x = 359,911,328,687,931
  5. Step 5: Solve for x
    x = 359,911,328,687,931/19,782,002.20
  6. Step 6: Final answer
    x = 18,193,877.70

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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.