Home / 20,799.18-31,171.56-18,160.02

Finding the Fourth Proportional to 20,799.18, 31,171.56 and 18,160.02

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Solution

The fourth proportional to 20,799.18, 31,171.56 and 18,160.02 is: 27,216.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.18 : 31,171.56 = 18,160.02 : x
  2. Step 2: Convert to fraction form
    20,799.18/31,171.56 = 18,160.02/x
  3. Step 3: Cross multiply
    20,799.18x = 31,171.56 × 18,160.02
  4. Step 4: Simplify right side
    20,799.18x = 566,076,153.03
  5. Step 5: Solve for x
    x = 566,076,153.03/20,799.18
  6. Step 6: Final answer
    x = 27,216.27

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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.