Home / 27,742.80-38,285.16-15,167.76

Finding the Fourth Proportional to 27,742.80, 38,285.16 and 15,167.76

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Solution

The fourth proportional to 27,742.80, 38,285.16 and 15,167.76 is: 20,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,742.80 : 38,285.16 = 15,167.76 : x
  2. Step 2: Convert to fraction form
    27,742.80/38,285.16 = 15,167.76/x
  3. Step 3: Cross multiply
    27,742.80x = 38,285.16 × 15,167.76
  4. Step 4: Simplify right side
    27,742.80x = 580,700,118.44
  5. Step 5: Solve for x
    x = 580,700,118.44/27,742.80
  6. Step 6: Final answer
    x = 20,931.56

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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.