Home / 20,756,387.20-31,158,200.40-12,241,521.40

Finding the Fourth Proportional to 20,756,387.20, 31,158,200.40 and 12,241,521.40

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Solution

The fourth proportional to 20,756,387.20, 31,158,200.40 and 12,241,521.40 is: 18,376,212.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756,387.20 : 31,158,200.40 = 12,241,521.40 : x
  2. Step 2: Convert to fraction form
    20,756,387.20/31,158,200.40 = 12,241,521.40/x
  3. Step 3: Cross multiply
    20,756,387.20x = 31,158,200.40 × 12,241,521.40
  4. Step 4: Simplify right side
    20,756,387.20x = 381,423,776,982,088.56
  5. Step 5: Solve for x
    x = 381,423,776,982,088.56/20,756,387.20
  6. Step 6: Final answer
    x = 18,376,212.26

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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.