Home / 20,486,362.40-30,729,543.60-10,282,695.20

Finding the Fourth Proportional to 20,486,362.40, 30,729,543.60 and 10,282,695.20

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Solution

The fourth proportional to 20,486,362.40, 30,729,543.60 and 10,282,695.20 is: 15,424,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,362.40 : 30,729,543.60 = 10,282,695.20 : x
  2. Step 2: Convert to fraction form
    20,486,362.40/30,729,543.60 = 10,282,695.20/x
  3. Step 3: Cross multiply
    20,486,362.40x = 30,729,543.60 × 10,282,695.20
  4. Step 4: Simplify right side
    20,486,362.40x = 315,982,530,473,910.69
  5. Step 5: Solve for x
    x = 315,982,530,473,910.69/20,486,362.40
  6. Step 6: Final answer
    x = 15,424,042.80

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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.