Home / 20,465.82-28,234.80-15,101.28

Finding the Fourth Proportional to 20,465.82, 28,234.80 and 15,101.28

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Solution

The fourth proportional to 20,465.82, 28,234.80 and 15,101.28 is: 20,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.82 : 28,234.80 = 15,101.28 : x
  2. Step 2: Convert to fraction form
    20,465.82/28,234.80 = 15,101.28/x
  3. Step 3: Cross multiply
    20,465.82x = 28,234.80 × 15,101.28
  4. Step 4: Simplify right side
    20,465.82x = 426,381,620.54
  5. Step 5: Solve for x
    x = 426,381,620.54/20,465.82
  6. Step 6: Final answer
    x = 20,833.84

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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.