Home / 15,791.04-21,790.56-8,714.88

Finding the Fourth Proportional to 15,791.04, 21,790.56 and 8,714.88

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Solution

The fourth proportional to 15,791.04, 21,790.56 and 8,714.88 is: 12,025.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.04 : 21,790.56 = 8,714.88 : x
  2. Step 2: Convert to fraction form
    15,791.04/21,790.56 = 8,714.88/x
  3. Step 3: Cross multiply
    15,791.04x = 21,790.56 × 8,714.88
  4. Step 4: Simplify right side
    15,791.04x = 189,902,115.53
  5. Step 5: Solve for x
    x = 189,902,115.53/15,791.04
  6. Step 6: Final answer
    x = 12,025.94

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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.