Home / 12,920,616.78-17,831,245.42-7,119,397

Finding the Fourth Proportional to 12,920,616.78, 17,831,245.42 and 7,119,397

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Solution

The fourth proportional to 12,920,616.78, 17,831,245.42 and 7,119,397 is: 9,825,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,616.78 : 17,831,245.42 = 7,119,397 : x
  2. Step 2: Convert to fraction form
    12,920,616.78/17,831,245.42 = 7,119,397/x
  3. Step 3: Cross multiply
    12,920,616.78x = 17,831,245.42 × 7,119,397
  4. Step 4: Simplify right side
    12,920,616.78x = 126,947,715,131,613.25
  5. Step 5: Solve for x
    x = 126,947,715,131,613.25/12,920,616.78
  6. Step 6: Final answer
    x = 9,825,205.51

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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.