Home / 15,016.64-20,721.38-8,301.18

Finding the Fourth Proportional to 15,016.64, 20,721.38 and 8,301.18

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Solution

The fourth proportional to 15,016.64, 20,721.38 and 8,301.18 is: 11,454.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.64 : 20,721.38 = 8,301.18 : x
  2. Step 2: Convert to fraction form
    15,016.64/20,721.38 = 8,301.18/x
  3. Step 3: Cross multiply
    15,016.64x = 20,721.38 × 8,301.18
  4. Step 4: Simplify right side
    15,016.64x = 172,011,863.72
  5. Step 5: Solve for x
    x = 172,011,863.72/15,016.64
  6. Step 6: Final answer
    x = 11,454.75

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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.