Home / 27,311.87-37,689.98-15,375.17

Finding the Fourth Proportional to 27,311.87, 37,689.98 and 15,375.17

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Solution

The fourth proportional to 27,311.87, 37,689.98 and 15,375.17 is: 21,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,311.87 : 37,689.98 = 15,375.17 : x
  2. Step 2: Convert to fraction form
    27,311.87/37,689.98 = 15,375.17/x
  3. Step 3: Cross multiply
    27,311.87x = 37,689.98 × 15,375.17
  4. Step 4: Simplify right side
    27,311.87x = 579,489,867.15
  5. Step 5: Solve for x
    x = 579,489,867.15/27,311.87
  6. Step 6: Final answer
    x = 21,217.51

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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.