Home / 21,142.88-31,714.32-5,560.48

Finding the Fourth Proportional to 21,142.88, 31,714.32 and 5,560.48

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Solution

The fourth proportional to 21,142.88, 31,714.32 and 5,560.48 is: 8,340.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.88 : 31,714.32 = 5,560.48 : x
  2. Step 2: Convert to fraction form
    21,142.88/31,714.32 = 5,560.48/x
  3. Step 3: Cross multiply
    21,142.88x = 31,714.32 × 5,560.48
  4. Step 4: Simplify right side
    21,142.88x = 176,346,842.07
  5. Step 5: Solve for x
    x = 176,346,842.07/21,142.88
  6. Step 6: Final answer
    x = 8,340.72

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Similar ratio
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1.5x scale

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.