Home / 31,291.72-43,183.02-18,714.04

Finding the Fourth Proportional to 31,291.72, 43,183.02 and 18,714.04

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Solution

The fourth proportional to 31,291.72, 43,183.02 and 18,714.04 is: 25,825.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,291.72 : 43,183.02 = 18,714.04 : x
  2. Step 2: Convert to fraction form
    31,291.72/43,183.02 = 18,714.04/x
  3. Step 3: Cross multiply
    31,291.72x = 43,183.02 × 18,714.04
  4. Step 4: Simplify right side
    31,291.72x = 808,128,763.60
  5. Step 5: Solve for x
    x = 808,128,763.60/31,291.72
  6. Step 6: Final answer
    x = 25,825.64

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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.