Home / 27,651.28-38,160.60-15,714.64

Finding the Fourth Proportional to 27,651.28, 38,160.60 and 15,714.64

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Solution

The fourth proportional to 27,651.28, 38,160.60 and 15,714.64 is: 21,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,651.28 : 38,160.60 = 15,714.64 : x
  2. Step 2: Convert to fraction form
    27,651.28/38,160.60 = 15,714.64/x
  3. Step 3: Cross multiply
    27,651.28x = 38,160.60 × 15,714.64
  4. Step 4: Simplify right side
    27,651.28x = 599,680,091.18
  5. Step 5: Solve for x
    x = 599,680,091.18/27,651.28
  6. Step 6: Final answer
    x = 21,687.25

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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.