Home / 13,486,521.40-20,229,782.10-7,729,243.90

Finding the Fourth Proportional to 13,486,521.40, 20,229,782.10 and 7,729,243.90

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Solution

The fourth proportional to 13,486,521.40, 20,229,782.10 and 7,729,243.90 is: 11,593,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486,521.40 : 20,229,782.10 = 7,729,243.90 : x
  2. Step 2: Convert to fraction form
    13,486,521.40/20,229,782.10 = 7,729,243.90/x
  3. Step 3: Cross multiply
    13,486,521.40x = 20,229,782.10 × 7,729,243.90
  4. Step 4: Simplify right side
    13,486,521.40x = 156,360,919,894,754.22
  5. Step 5: Solve for x
    x = 156,360,919,894,754.22/13,486,521.40
  6. Step 6: Final answer
    x = 11,593,865.85

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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.