Home / 12,631.68-17,431.20-7,326.72

Finding the Fourth Proportional to 12,631.68, 17,431.20 and 7,326.72

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Solution

The fourth proportional to 12,631.68, 17,431.20 and 7,326.72 is: 10,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.68 : 17,431.20 = 7,326.72 : x
  2. Step 2: Convert to fraction form
    12,631.68/17,431.20 = 7,326.72/x
  3. Step 3: Cross multiply
    12,631.68x = 17,431.20 × 7,326.72
  4. Step 4: Simplify right side
    12,631.68x = 127,713,521.66
  5. Step 5: Solve for x
    x = 127,713,521.66/12,631.68
  6. Step 6: Final answer
    x = 10,110.57

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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.