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Finding the Fourth Proportional to 15,248,793.17, 21,043,239.89 and 8,722,531.64

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Solution

The fourth proportional to 15,248,793.17, 21,043,239.89 and 8,722,531.64 is: 12,037,039.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,248,793.17 : 21,043,239.89 = 8,722,531.64 : x
  2. Step 2: Convert to fraction form
    15,248,793.17/21,043,239.89 = 8,722,531.64/x
  3. Step 3: Cross multiply
    15,248,793.17x = 21,043,239.89 × 8,722,531.64
  4. Step 4: Simplify right side
    15,248,793.17x = 183,550,325,757,630.56
  5. Step 5: Solve for x
    x = 183,550,325,757,630.56/15,248,793.17
  6. Step 6: Final answer
    x = 12,037,039.50

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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.