Home / 20,924.16-31,381.44-12,493.04

Finding the Fourth Proportional to 20,924.16, 31,381.44 and 12,493.04

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Solution

The fourth proportional to 20,924.16, 31,381.44 and 12,493.04 is: 18,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.16 : 31,381.44 = 12,493.04 : x
  2. Step 2: Convert to fraction form
    20,924.16/31,381.44 = 12,493.04/x
  3. Step 3: Cross multiply
    20,924.16x = 31,381.44 × 12,493.04
  4. Step 4: Simplify right side
    20,924.16x = 392,049,585.18
  5. Step 5: Solve for x
    x = 392,049,585.18/20,924.16
  6. Step 6: Final answer
    x = 18,736.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.