Home / 20,508.29-28,299.66-11,554.19

Finding the Fourth Proportional to 20,508.29, 28,299.66 and 11,554.19

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Solution

The fourth proportional to 20,508.29, 28,299.66 and 11,554.19 is: 15,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.29 : 28,299.66 = 11,554.19 : x
  2. Step 2: Convert to fraction form
    20,508.29/28,299.66 = 11,554.19/x
  3. Step 3: Cross multiply
    20,508.29x = 28,299.66 × 11,554.19
  4. Step 4: Simplify right side
    20,508.29x = 326,979,648.58
  5. Step 5: Solve for x
    x = 326,979,648.58/20,508.29
  6. Step 6: Final answer
    x = 15,943.78

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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.