Home / 13,120,869.60-19,681,304.40-7,381,306.80

Finding the Fourth Proportional to 13,120,869.60, 19,681,304.40 and 7,381,306.80

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Solution

The fourth proportional to 13,120,869.60, 19,681,304.40 and 7,381,306.80 is: 11,071,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,869.60 : 19,681,304.40 = 7,381,306.80 : x
  2. Step 2: Convert to fraction form
    13,120,869.60/19,681,304.40 = 7,381,306.80/x
  3. Step 3: Cross multiply
    13,120,869.60x = 19,681,304.40 × 7,381,306.80
  4. Step 4: Simplify right side
    13,120,869.60x = 145,273,746,000,589.91
  5. Step 5: Solve for x
    x = 145,273,746,000,589.91/13,120,869.60
  6. Step 6: Final answer
    x = 11,071,960.20

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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.