Home / 27,815.68-38,385.44-15,240.56

Finding the Fourth Proportional to 27,815.68, 38,385.44 and 15,240.56

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Solution

The fourth proportional to 27,815.68, 38,385.44 and 15,240.56 is: 21,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.68 : 38,385.44 = 15,240.56 : x
  2. Step 2: Convert to fraction form
    27,815.68/38,385.44 = 15,240.56/x
  3. Step 3: Cross multiply
    27,815.68x = 38,385.44 × 15,240.56
  4. Step 4: Simplify right side
    27,815.68x = 585,015,601.45
  5. Step 5: Solve for x
    x = 585,015,601.45/27,815.68
  6. Step 6: Final answer
    x = 21,031.86

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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.