Home / 15,121.26-20,864.28-8,832.42

Finding the Fourth Proportional to 15,121.26, 20,864.28 and 8,832.42

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Solution

The fourth proportional to 15,121.26, 20,864.28 and 8,832.42 is: 12,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.26 : 20,864.28 = 8,832.42 : x
  2. Step 2: Convert to fraction form
    15,121.26/20,864.28 = 8,832.42/x
  3. Step 3: Cross multiply
    15,121.26x = 20,864.28 × 8,832.42
  4. Step 4: Simplify right side
    15,121.26x = 184,282,083.96
  5. Step 5: Solve for x
    x = 184,282,083.96/15,121.26
  6. Step 6: Final answer
    x = 12,186.95

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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.