Home / 27,871.76-38,452.08-15,928.69

Finding the Fourth Proportional to 27,871.76, 38,452.08 and 15,928.69

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Solution

The fourth proportional to 27,871.76, 38,452.08 and 15,928.69 is: 21,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,871.76 : 38,452.08 = 15,928.69 : x
  2. Step 2: Convert to fraction form
    27,871.76/38,452.08 = 15,928.69/x
  3. Step 3: Cross multiply
    27,871.76x = 38,452.08 × 15,928.69
  4. Step 4: Simplify right side
    27,871.76x = 612,491,182.53
  5. Step 5: Solve for x
    x = 612,491,182.53/27,871.76
  6. Step 6: Final answer
    x = 21,975.34

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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.