Home / 31,779.60-43,857.92-18,351.42

Finding the Fourth Proportional to 31,779.60, 43,857.92 and 18,351.42

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Solution

The fourth proportional to 31,779.60, 43,857.92 and 18,351.42 is: 25,326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.60 : 43,857.92 = 18,351.42 : x
  2. Step 2: Convert to fraction form
    31,779.60/43,857.92 = 18,351.42/x
  3. Step 3: Cross multiply
    31,779.60x = 43,857.92 × 18,351.42
  4. Step 4: Simplify right side
    31,779.60x = 804,854,890.96
  5. Step 5: Solve for x
    x = 804,854,890.96/31,779.60
  6. Step 6: Final answer
    x = 25,326.15

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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.