Home / 15,121.25-20,864.27-8,832.41

Finding the Fourth Proportional to 15,121.25, 20,864.27 and 8,832.41

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Solution

The fourth proportional to 15,121.25, 20,864.27 and 8,832.41 is: 12,186.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.25 : 20,864.27 = 8,832.41 : x
  2. Step 2: Convert to fraction form
    15,121.25/20,864.27 = 8,832.41/x
  3. Step 3: Cross multiply
    15,121.25x = 20,864.27 × 8,832.41
  4. Step 4: Simplify right side
    15,121.25x = 184,281,704.75
  5. Step 5: Solve for x
    x = 184,281,704.75/15,121.25
  6. Step 6: Final answer
    x = 12,186.94

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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.