Home / 28,040.72-38,695.32-15,942.53

Finding the Fourth Proportional to 28,040.72, 38,695.32 and 15,942.53

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Solution

The fourth proportional to 28,040.72, 38,695.32 and 15,942.53 is: 22,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.72 : 38,695.32 = 15,942.53 : x
  2. Step 2: Convert to fraction form
    28,040.72/38,695.32 = 15,942.53/x
  3. Step 3: Cross multiply
    28,040.72x = 38,695.32 × 15,942.53
  4. Step 4: Simplify right side
    28,040.72x = 616,901,396.70
  5. Step 5: Solve for x
    x = 616,901,396.70/28,040.72
  6. Step 6: Final answer
    x = 22,000.20

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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.