Home / 28,212.66-42,282.54-13,426.11

Finding the Fourth Proportional to 28,212.66, 42,282.54 and 13,426.11

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Solution

The fourth proportional to 28,212.66, 42,282.54 and 13,426.11 is: 20,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.66 : 42,282.54 = 13,426.11 : x
  2. Step 2: Convert to fraction form
    28,212.66/42,282.54 = 13,426.11/x
  3. Step 3: Cross multiply
    28,212.66x = 42,282.54 × 13,426.11
  4. Step 4: Simplify right side
    28,212.66x = 567,690,033.12
  5. Step 5: Solve for x
    x = 567,690,033.12/28,212.66
  6. Step 6: Final answer
    x = 20,121.82

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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.