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Finding the Fourth Proportional to 15,202,342.95, 20,978,973.97 and 8,232,963.87

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Solution

The fourth proportional to 15,202,342.95, 20,978,973.97 and 8,232,963.87 is: 11,361,349.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202,342.95 : 20,978,973.97 = 8,232,963.87 : x
  2. Step 2: Convert to fraction form
    15,202,342.95/20,978,973.97 = 8,232,963.87/x
  3. Step 3: Cross multiply
    15,202,342.95x = 20,978,973.97 × 8,232,963.87
  4. Step 4: Simplify right side
    15,202,342.95x = 172,719,134,693,160.25
  5. Step 5: Solve for x
    x = 172,719,134,693,160.25/15,202,342.95
  6. Step 6: Final answer
    x = 11,361,349.71

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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.