Home / 20,458.27-28,232.15-11,505.77

Finding the Fourth Proportional to 20,458.27, 28,232.15 and 11,505.77

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Solution

The fourth proportional to 20,458.27, 28,232.15 and 11,505.77 is: 15,877.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.27 : 28,232.15 = 11,505.77 : x
  2. Step 2: Convert to fraction form
    20,458.27/28,232.15 = 11,505.77/x
  3. Step 3: Cross multiply
    20,458.27x = 28,232.15 × 11,505.77
  4. Step 4: Simplify right side
    20,458.27x = 324,832,624.51
  5. Step 5: Solve for x
    x = 324,832,624.51/20,458.27
  6. Step 6: Final answer
    x = 15,877.81

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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.