Home / 31,203.78-43,065.25-17,779.85

Finding the Fourth Proportional to 31,203.78, 43,065.25 and 17,779.85

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Solution

The fourth proportional to 31,203.78, 43,065.25 and 17,779.85 is: 24,538.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,203.78 : 43,065.25 = 17,779.85 : x
  2. Step 2: Convert to fraction form
    31,203.78/43,065.25 = 17,779.85/x
  3. Step 3: Cross multiply
    31,203.78x = 43,065.25 × 17,779.85
  4. Step 4: Simplify right side
    31,203.78x = 765,693,748.43
  5. Step 5: Solve for x
    x = 765,693,748.43/31,203.78
  6. Step 6: Final answer
    x = 24,538.49

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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.