Home / 27,375.76-37,778.81-15,439.42

Finding the Fourth Proportional to 27,375.76, 37,778.81 and 15,439.42

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Solution

The fourth proportional to 27,375.76, 37,778.81 and 15,439.42 is: 21,306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,375.76 : 37,778.81 = 15,439.42 : x
  2. Step 2: Convert to fraction form
    27,375.76/37,778.81 = 15,439.42/x
  3. Step 3: Cross multiply
    27,375.76x = 37,778.81 × 15,439.42
  4. Step 4: Simplify right side
    27,375.76x = 583,282,914.69
  5. Step 5: Solve for x
    x = 583,282,914.69/27,375.76
  6. Step 6: Final answer
    x = 21,306.55

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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.