Home / 29,381.74-40,531.76-18,760.20

Finding the Fourth Proportional to 29,381.74, 40,531.76 and 18,760.20

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Solution

The fourth proportional to 29,381.74, 40,531.76 and 18,760.20 is: 25,879.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,381.74 : 40,531.76 = 18,760.20 : x
  2. Step 2: Convert to fraction form
    29,381.74/40,531.76 = 18,760.20/x
  3. Step 3: Cross multiply
    29,381.74x = 40,531.76 × 18,760.20
  4. Step 4: Simplify right side
    29,381.74x = 760,383,923.95
  5. Step 5: Solve for x
    x = 760,383,923.95/29,381.74
  6. Step 6: Final answer
    x = 25,879.47

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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.