Home / 27,687.99-38,209.42-15,112.74

Finding the Fourth Proportional to 27,687.99, 38,209.42 and 15,112.74

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Solution

The fourth proportional to 27,687.99, 38,209.42 and 15,112.74 is: 20,855.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.99 : 38,209.42 = 15,112.74 : x
  2. Step 2: Convert to fraction form
    27,687.99/38,209.42 = 15,112.74/x
  3. Step 3: Cross multiply
    27,687.99x = 38,209.42 × 15,112.74
  4. Step 4: Simplify right side
    27,687.99x = 577,449,192.19
  5. Step 5: Solve for x
    x = 577,449,192.19/27,687.99
  6. Step 6: Final answer
    x = 20,855.58

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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.