Home / 15,351.29-21,187.33-9,689.13

Finding the Fourth Proportional to 15,351.29, 21,187.33 and 9,689.13

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Solution

The fourth proportional to 15,351.29, 21,187.33 and 9,689.13 is: 13,372.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.29 : 21,187.33 = 9,689.13 : x
  2. Step 2: Convert to fraction form
    15,351.29/21,187.33 = 9,689.13/x
  3. Step 3: Cross multiply
    15,351.29x = 21,187.33 × 9,689.13
  4. Step 4: Simplify right side
    15,351.29x = 205,286,794.72
  5. Step 5: Solve for x
    x = 205,286,794.72/15,351.29
  6. Step 6: Final answer
    x = 13,372.61

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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.