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Finding the Fourth Proportional to 12,462.88, 17,198.16 and 7,426.98

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Solution

The fourth proportional to 12,462.88, 17,198.16 and 7,426.98 is: 10,248.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462.88 : 17,198.16 = 7,426.98 : x
  2. Step 2: Convert to fraction form
    12,462.88/17,198.16 = 7,426.98/x
  3. Step 3: Cross multiply
    12,462.88x = 17,198.16 × 7,426.98
  4. Step 4: Simplify right side
    12,462.88x = 127,730,390.36
  5. Step 5: Solve for x
    x = 127,730,390.36/12,462.88
  6. Step 6: Final answer
    x = 10,248.87

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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.