Home / 20,452.37-28,238.25-15,663.85

Finding the Fourth Proportional to 20,452.37, 28,238.25 and 15,663.85

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Solution

The fourth proportional to 20,452.37, 28,238.25 and 15,663.85 is: 21,626.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.37 : 28,238.25 = 15,663.85 : x
  2. Step 2: Convert to fraction form
    20,452.37/28,238.25 = 15,663.85/x
  3. Step 3: Cross multiply
    20,452.37x = 28,238.25 × 15,663.85
  4. Step 4: Simplify right side
    20,452.37x = 442,319,747.56
  5. Step 5: Solve for x
    x = 442,319,747.56/20,452.37
  6. Step 6: Final answer
    x = 21,626.82

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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.