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Finding the Fourth Proportional to 8,959,261.20, 13,438,891.80 and 8,959,261.20

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Solution

The fourth proportional to 8,959,261.20, 13,438,891.80 and 8,959,261.20 is: 13,438,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959,261.20 : 13,438,891.80 = 8,959,261.20 : x
  2. Step 2: Convert to fraction form
    8,959,261.20/13,438,891.80 = 8,959,261.20/x
  3. Step 3: Cross multiply
    8,959,261.20x = 13,438,891.80 × 8,959,261.20
  4. Step 4: Simplify right side
    8,959,261.20x = 120,402,541,874,738.16
  5. Step 5: Solve for x
    x = 120,402,541,874,738.16/8,959,261.20
  6. Step 6: Final answer
    x = 13,438,891.80

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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.