Home / 15,016.24-20,721.80-8,301.44

Finding the Fourth Proportional to 15,016.24, 20,721.80 and 8,301.44

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Solution

The fourth proportional to 15,016.24, 20,721.80 and 8,301.44 is: 11,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.24 : 20,721.80 = 8,301.44 : x
  2. Step 2: Convert to fraction form
    15,016.24/20,721.80 = 8,301.44/x
  3. Step 3: Cross multiply
    15,016.24x = 20,721.80 × 8,301.44
  4. Step 4: Simplify right side
    15,016.24x = 172,020,779.39
  5. Step 5: Solve for x
    x = 172,020,779.39/15,016.24
  6. Step 6: Final answer
    x = 11,455.65

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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.