Home / 20,884.73-31,335.30-9,189.75

Finding the Fourth Proportional to 20,884.73, 31,335.30 and 9,189.75

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Solution

The fourth proportional to 20,884.73, 31,335.30 and 9,189.75 is: 13,788.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.73 : 31,335.30 = 9,189.75 : x
  2. Step 2: Convert to fraction form
    20,884.73/31,335.30 = 9,189.75/x
  3. Step 3: Cross multiply
    20,884.73x = 31,335.30 × 9,189.75
  4. Step 4: Simplify right side
    20,884.73x = 287,963,573.18
  5. Step 5: Solve for x
    x = 287,963,573.18/20,884.73
  6. Step 6: Final answer
    x = 13,788.24

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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.