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Finding the Fourth Proportional to 13,199,761.20, 19,799,641.80 and 9,840,529.20

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Solution

The fourth proportional to 13,199,761.20, 19,799,641.80 and 9,840,529.20 is: 14,760,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199,761.20 : 19,799,641.80 = 9,840,529.20 : x
  2. Step 2: Convert to fraction form
    13,199,761.20/19,799,641.80 = 9,840,529.20/x
  3. Step 3: Cross multiply
    13,199,761.20x = 19,799,641.80 × 9,840,529.20
  4. Step 4: Simplify right side
    13,199,761.20x = 194,838,953,282,440.56
  5. Step 5: Solve for x
    x = 194,838,953,282,440.56/13,199,761.20
  6. Step 6: Final answer
    x = 14,760,793.80

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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.