Home / 27,859.68-38,447.28-15,285.12

Finding the Fourth Proportional to 27,859.68, 38,447.28 and 15,285.12

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Solution

The fourth proportional to 27,859.68, 38,447.28 and 15,285.12 is: 21,093.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,859.68 : 38,447.28 = 15,285.12 : x
  2. Step 2: Convert to fraction form
    27,859.68/38,447.28 = 15,285.12/x
  3. Step 3: Cross multiply
    27,859.68x = 38,447.28 × 15,285.12
  4. Step 4: Simplify right side
    27,859.68x = 587,671,288.47
  5. Step 5: Solve for x
    x = 587,671,288.47/27,859.68
  6. Step 6: Final answer
    x = 21,093.97

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Similar ratio
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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.