Home / 15,442-21,315.18-9,625.66

Finding the Fourth Proportional to 15,442, 21,315.18 and 9,625.66

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Solution

The fourth proportional to 15,442, 21,315.18 and 9,625.66 is: 13,286.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442 : 21,315.18 = 9,625.66 : x
  2. Step 2: Convert to fraction form
    15,442/21,315.18 = 9,625.66/x
  3. Step 3: Cross multiply
    15,442x = 21,315.18 × 9,625.66
  4. Step 4: Simplify right side
    15,442x = 205,172,675.52
  5. Step 5: Solve for x
    x = 205,172,675.52/15,442
  6. Step 6: Final answer
    x = 13,286.66

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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.