Home / 31,425.48-43,377.32-20,125.41

Finding the Fourth Proportional to 31,425.48, 43,377.32 and 20,125.41

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Solution

The fourth proportional to 31,425.48, 43,377.32 and 20,125.41 is: 27,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.48 : 43,377.32 = 20,125.41 : x
  2. Step 2: Convert to fraction form
    31,425.48/43,377.32 = 20,125.41/x
  3. Step 3: Cross multiply
    31,425.48x = 43,377.32 × 20,125.41
  4. Step 4: Simplify right side
    31,425.48x = 872,986,481.35
  5. Step 5: Solve for x
    x = 872,986,481.35/31,425.48
  6. Step 6: Final answer
    x = 27,779.57

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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.