Home / 20,458.22-28,232.52-11,505.66

Finding the Fourth Proportional to 20,458.22, 28,232.52 and 11,505.66

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Solution

The fourth proportional to 20,458.22, 28,232.52 and 11,505.66 is: 15,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.22 : 28,232.52 = 11,505.66 : x
  2. Step 2: Convert to fraction form
    20,458.22/28,232.52 = 11,505.66/x
  3. Step 3: Cross multiply
    20,458.22x = 28,232.52 × 11,505.66
  4. Step 4: Simplify right side
    20,458.22x = 324,833,776.06
  5. Step 5: Solve for x
    x = 324,833,776.06/20,458.22
  6. Step 6: Final answer
    x = 15,877.91

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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.