Home / 28,147.79-42,221.66-11,288.41

Finding the Fourth Proportional to 28,147.79, 42,221.66 and 11,288.41

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Solution

The fourth proportional to 28,147.79, 42,221.66 and 11,288.41 is: 16,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.79 : 42,221.66 = 11,288.41 : x
  2. Step 2: Convert to fraction form
    28,147.79/42,221.66 = 11,288.41/x
  3. Step 3: Cross multiply
    28,147.79x = 42,221.66 × 11,288.41
  4. Step 4: Simplify right side
    28,147.79x = 476,615,246.96
  5. Step 5: Solve for x
    x = 476,615,246.96/28,147.79
  6. Step 6: Final answer
    x = 16,932.60

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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.