Home / 18,689,542.40-28,039,562.40-9,105,233.60

Finding the Fourth Proportional to 18,689,542.40, 28,039,562.40 and 9,105,233.60

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Solution

The fourth proportional to 18,689,542.40, 28,039,562.40 and 9,105,233.60 is: 13,660,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,542.40 : 28,039,562.40 = 9,105,233.60 : x
  2. Step 2: Convert to fraction form
    18,689,542.40/28,039,562.40 = 9,105,233.60/x
  3. Step 3: Cross multiply
    18,689,542.40x = 28,039,562.40 × 9,105,233.60
  4. Step 4: Simplify right side
    18,689,542.40x = 255,306,765,693,776.62
  5. Step 5: Solve for x
    x = 255,306,765,693,776.62/18,689,542.40
  6. Step 6: Final answer
    x = 13,660,407.53

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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.