Home / 27,687.20-38,208.36-15,752.88

Finding the Fourth Proportional to 27,687.20, 38,208.36 and 15,752.88

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Solution

The fourth proportional to 27,687.20, 38,208.36 and 15,752.88 is: 21,738.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.20 : 38,208.36 = 15,752.88 : x
  2. Step 2: Convert to fraction form
    27,687.20/38,208.36 = 15,752.88/x
  3. Step 3: Cross multiply
    27,687.20x = 38,208.36 × 15,752.88
  4. Step 4: Simplify right side
    27,687.20x = 601,891,710.08
  5. Step 5: Solve for x
    x = 601,891,710.08/27,687.20
  6. Step 6: Final answer
    x = 21,738.99

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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.