Home / 27,778.68-38,334.31-15,031.59

Finding the Fourth Proportional to 27,778.68, 38,334.31 and 15,031.59

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Solution

The fourth proportional to 27,778.68, 38,334.31 and 15,031.59 is: 20,743.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.68 : 38,334.31 = 15,031.59 : x
  2. Step 2: Convert to fraction form
    27,778.68/38,334.31 = 15,031.59/x
  3. Step 3: Cross multiply
    27,778.68x = 38,334.31 × 15,031.59
  4. Step 4: Simplify right side
    27,778.68x = 576,225,449.52
  5. Step 5: Solve for x
    x = 576,225,449.52/27,778.68
  6. Step 6: Final answer
    x = 20,743.44

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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.