Home / 27,651.27-38,158.76-15,714.30

Finding the Fourth Proportional to 27,651.27, 38,158.76 and 15,714.30

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Solution

The fourth proportional to 27,651.27, 38,158.76 and 15,714.30 is: 21,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,651.27 : 38,158.76 = 15,714.30 : x
  2. Step 2: Convert to fraction form
    27,651.27/38,158.76 = 15,714.30/x
  3. Step 3: Cross multiply
    27,651.27x = 38,158.76 × 15,714.30
  4. Step 4: Simplify right side
    27,651.27x = 599,638,241.55
  5. Step 5: Solve for x
    x = 599,638,241.55/27,651.27
  6. Step 6: Final answer
    x = 21,685.74

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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.