Home / 27,731.45-38,269.52-15,156.20

Finding the Fourth Proportional to 27,731.45, 38,269.52 and 15,156.20

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Solution

The fourth proportional to 27,731.45, 38,269.52 and 15,156.20 is: 20,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.45 : 38,269.52 = 15,156.20 : x
  2. Step 2: Convert to fraction form
    27,731.45/38,269.52 = 15,156.20/x
  3. Step 3: Cross multiply
    27,731.45x = 38,269.52 × 15,156.20
  4. Step 4: Simplify right side
    27,731.45x = 580,020,231.90
  5. Step 5: Solve for x
    x = 580,020,231.90/27,731.45
  6. Step 6: Final answer
    x = 20,915.62

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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.