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Finding the Fourth Proportional to 10,361,393.70, 15,514,096.95 and 8,121,905.70

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Solution

The fourth proportional to 10,361,393.70, 15,514,096.95 and 8,121,905.70 is: 12,160,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361,393.70 : 15,514,096.95 = 8,121,905.70 : x
  2. Step 2: Convert to fraction form
    10,361,393.70/15,514,096.95 = 8,121,905.70/x
  3. Step 3: Cross multiply
    10,361,393.70x = 15,514,096.95 × 8,121,905.70
  4. Step 4: Simplify right side
    10,361,393.70x = 126,004,032,448,557.61
  5. Step 5: Solve for x
    x = 126,004,032,448,557.61/10,361,393.70
  6. Step 6: Final answer
    x = 12,160,915.42

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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.