Home / 15,016.23-20,721.81-8,301.42

Finding the Fourth Proportional to 15,016.23, 20,721.81 and 8,301.42

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Solution

The fourth proportional to 15,016.23, 20,721.81 and 8,301.42 is: 11,455.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.23 : 20,721.81 = 8,301.42 : x
  2. Step 2: Convert to fraction form
    15,016.23/20,721.81 = 8,301.42/x
  3. Step 3: Cross multiply
    15,016.23x = 20,721.81 × 8,301.42
  4. Step 4: Simplify right side
    15,016.23x = 172,020,447.97
  5. Step 5: Solve for x
    x = 172,020,447.97/15,016.23
  6. Step 6: Final answer
    x = 11,455.63

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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.