Home / 27,811.92-38,384.10-15,872.52

Finding the Fourth Proportional to 27,811.92, 38,384.10 and 15,872.52

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Solution

The fourth proportional to 27,811.92, 38,384.10 and 15,872.52 is: 21,906.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,811.92 : 38,384.10 = 15,872.52 : x
  2. Step 2: Convert to fraction form
    27,811.92/38,384.10 = 15,872.52/x
  3. Step 3: Cross multiply
    27,811.92x = 38,384.10 × 15,872.52
  4. Step 4: Simplify right side
    27,811.92x = 609,252,394.93
  5. Step 5: Solve for x
    x = 609,252,394.93/27,811.92
  6. Step 6: Final answer
    x = 21,906.16

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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.