Home / 27,868.64-38,458.68-15,121.83

Finding the Fourth Proportional to 27,868.64, 38,458.68 and 15,121.83

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Solution

The fourth proportional to 27,868.64, 38,458.68 and 15,121.83 is: 20,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,868.64 : 38,458.68 = 15,121.83 : x
  2. Step 2: Convert to fraction form
    27,868.64/38,458.68 = 15,121.83/x
  3. Step 3: Cross multiply
    27,868.64x = 38,458.68 × 15,121.83
  4. Step 4: Simplify right side
    27,868.64x = 581,565,620.98
  5. Step 5: Solve for x
    x = 581,565,620.98/27,868.64
  6. Step 6: Final answer
    x = 20,868.10

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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.