Home / 15,761.20-23,640.20-5,372.80

Finding the Fourth Proportional to 15,761.20, 23,640.20 and 5,372.80

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Solution

The fourth proportional to 15,761.20, 23,640.20 and 5,372.80 is: 8,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.20 : 23,640.20 = 5,372.80 : x
  2. Step 2: Convert to fraction form
    15,761.20/23,640.20 = 5,372.80/x
  3. Step 3: Cross multiply
    15,761.20x = 23,640.20 × 5,372.80
  4. Step 4: Simplify right side
    15,761.20x = 127,014,066.56
  5. Step 5: Solve for x
    x = 127,014,066.56/15,761.20
  6. Step 6: Final answer
    x = 8,058.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.