Home / 12,920,037.68-17,824,049.62-7,690,113.31

Finding the Fourth Proportional to 12,920,037.68, 17,824,049.62 and 7,690,113.31

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Solution

The fourth proportional to 12,920,037.68, 17,824,049.62 and 7,690,113.31 is: 10,609,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,037.68 : 17,824,049.62 = 7,690,113.31 : x
  2. Step 2: Convert to fraction form
    12,920,037.68/17,824,049.62 = 7,690,113.31/x
  3. Step 3: Cross multiply
    12,920,037.68x = 17,824,049.62 × 7,690,113.31
  4. Step 4: Simplify right side
    12,920,037.68x = 137,068,961,157,077.03
  5. Step 5: Solve for x
    x = 137,068,961,157,077.03/12,920,037.68
  6. Step 6: Final answer
    x = 10,609,021.78

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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.