Home / 27,872.80-38,464.48-15,125.93

Finding the Fourth Proportional to 27,872.80, 38,464.48 and 15,125.93

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Solution

The fourth proportional to 27,872.80, 38,464.48 and 15,125.93 is: 20,873.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.80 : 38,464.48 = 15,125.93 : x
  2. Step 2: Convert to fraction form
    27,872.80/38,464.48 = 15,125.93/x
  3. Step 3: Cross multiply
    27,872.80x = 38,464.48 × 15,125.93
  4. Step 4: Simplify right side
    27,872.80x = 581,811,031.97
  5. Step 5: Solve for x
    x = 581,811,031.97/27,872.80
  6. Step 6: Final answer
    x = 20,873.79

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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.