Home / 27,689.50-38,198.20-18,125.17

Finding the Fourth Proportional to 27,689.50, 38,198.20 and 18,125.17

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Solution

The fourth proportional to 27,689.50, 38,198.20 and 18,125.17 is: 25,004.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.50 : 38,198.20 = 18,125.17 : x
  2. Step 2: Convert to fraction form
    27,689.50/38,198.20 = 18,125.17/x
  3. Step 3: Cross multiply
    27,689.50x = 38,198.20 × 18,125.17
  4. Step 4: Simplify right side
    27,689.50x = 692,348,868.69
  5. Step 5: Solve for x
    x = 692,348,868.69/27,689.50
  6. Step 6: Final answer
    x = 25,004.02

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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.