Home / 18,121,042.20-25,007,023.62-9,972,280.20

Finding the Fourth Proportional to 18,121,042.20, 25,007,023.62 and 9,972,280.20

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Solution

The fourth proportional to 18,121,042.20, 25,007,023.62 and 9,972,280.20 is: 13,761,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121,042.20 : 25,007,023.62 = 9,972,280.20 : x
  2. Step 2: Convert to fraction form
    18,121,042.20/25,007,023.62 = 9,972,280.20/x
  3. Step 3: Cross multiply
    18,121,042.20x = 25,007,023.62 × 9,972,280.20
  4. Step 4: Simplify right side
    18,121,042.20x = 249,377,046,506,658.31
  5. Step 5: Solve for x
    x = 249,377,046,506,658.31/18,121,042.20
  6. Step 6: Final answer
    x = 13,761,738.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.