Home / 25,640.13-38,455.44-20,671.53

Finding the Fourth Proportional to 25,640.13, 38,455.44 and 20,671.53

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Solution

The fourth proportional to 25,640.13, 38,455.44 and 20,671.53 is: 31,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,640.13 : 38,455.44 = 20,671.53 : x
  2. Step 2: Convert to fraction form
    25,640.13/38,455.44 = 20,671.53/x
  3. Step 3: Cross multiply
    25,640.13x = 38,455.44 × 20,671.53
  4. Step 4: Simplify right side
    25,640.13x = 794,932,781.62
  5. Step 5: Solve for x
    x = 794,932,781.62/25,640.13
  6. Step 6: Final answer
    x = 31,003.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.