Home / 27,714.32-38,245.70-15,139.07

Finding the Fourth Proportional to 27,714.32, 38,245.70 and 15,139.07

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Solution

The fourth proportional to 27,714.32, 38,245.70 and 15,139.07 is: 20,891.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,714.32 : 38,245.70 = 15,139.07 : x
  2. Step 2: Convert to fraction form
    27,714.32/38,245.70 = 15,139.07/x
  3. Step 3: Cross multiply
    27,714.32x = 38,245.70 × 15,139.07
  4. Step 4: Simplify right side
    27,714.32x = 579,004,214.96
  5. Step 5: Solve for x
    x = 579,004,214.96/27,714.32
  6. Step 6: Final answer
    x = 20,891.88

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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.