Home / 12,427.24-17,143.86-7,948.75

Finding the Fourth Proportional to 12,427.24, 17,143.86 and 7,948.75

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Solution

The fourth proportional to 12,427.24, 17,143.86 and 7,948.75 is: 10,965.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.24 : 17,143.86 = 7,948.75 : x
  2. Step 2: Convert to fraction form
    12,427.24/17,143.86 = 7,948.75/x
  3. Step 3: Cross multiply
    12,427.24x = 17,143.86 × 7,948.75
  4. Step 4: Simplify right side
    12,427.24x = 136,272,257.18
  5. Step 5: Solve for x
    x = 136,272,257.18/12,427.24
  6. Step 6: Final answer
    x = 10,965.61

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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.