Home / 12,427.34-17,143.20-7,387.98

Finding the Fourth Proportional to 12,427.34, 17,143.20 and 7,387.98

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Solution

The fourth proportional to 12,427.34, 17,143.20 and 7,387.98 is: 10,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.34 : 17,143.20 = 7,387.98 : x
  2. Step 2: Convert to fraction form
    12,427.34/17,143.20 = 7,387.98/x
  3. Step 3: Cross multiply
    12,427.34x = 17,143.20 × 7,387.98
  4. Step 4: Simplify right side
    12,427.34x = 126,653,631.97
  5. Step 5: Solve for x
    x = 126,653,631.97/12,427.34
  6. Step 6: Final answer
    x = 10,191.53

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1.5x scale

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.