Home / 20,373.66-28,122.53-12,832.61

Finding the Fourth Proportional to 20,373.66, 28,122.53 and 12,832.61

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Solution

The fourth proportional to 20,373.66, 28,122.53 and 12,832.61 is: 17,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.66 : 28,122.53 = 12,832.61 : x
  2. Step 2: Convert to fraction form
    20,373.66/28,122.53 = 12,832.61/x
  3. Step 3: Cross multiply
    20,373.66x = 28,122.53 × 12,832.61
  4. Step 4: Simplify right side
    20,373.66x = 360,885,254.93
  5. Step 5: Solve for x
    x = 360,885,254.93/20,373.66
  6. Step 6: Final answer
    x = 17,713.32

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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.