Home / 15,016.45-20,721.61-8,302.16

Finding the Fourth Proportional to 15,016.45, 20,721.61 and 8,302.16

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Solution

The fourth proportional to 15,016.45, 20,721.61 and 8,302.16 is: 11,456.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.45 : 20,721.61 = 8,302.16 : x
  2. Step 2: Convert to fraction form
    15,016.45/20,721.61 = 8,302.16/x
  3. Step 3: Cross multiply
    15,016.45x = 20,721.61 × 8,302.16
  4. Step 4: Simplify right side
    15,016.45x = 172,034,106.15
  5. Step 5: Solve for x
    x = 172,034,106.15/15,016.45
  6. Step 6: Final answer
    x = 11,456.38

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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.