Home / 12,979,770.28-17,917,598.47-8,087,409.57

Finding the Fourth Proportional to 12,979,770.28, 17,917,598.47 and 8,087,409.57

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Solution

The fourth proportional to 12,979,770.28, 17,917,598.47 and 8,087,409.57 is: 11,164,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,770.28 : 17,917,598.47 = 8,087,409.57 : x
  2. Step 2: Convert to fraction form
    12,979,770.28/17,917,598.47 = 8,087,409.57/x
  3. Step 3: Cross multiply
    12,979,770.28x = 17,917,598.47 × 8,087,409.57
  4. Step 4: Simplify right side
    12,979,770.28x = 144,906,957,337,695.34
  5. Step 5: Solve for x
    x = 144,906,957,337,695.34/12,979,770.28
  6. Step 6: Final answer
    x = 11,164,061.78

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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.