Home / 20,869.60-31,307.44-6,076.64

Finding the Fourth Proportional to 20,869.60, 31,307.44 and 6,076.64

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Solution

The fourth proportional to 20,869.60, 31,307.44 and 6,076.64 is: 9,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.60 : 31,307.44 = 6,076.64 : x
  2. Step 2: Convert to fraction form
    20,869.60/31,307.44 = 6,076.64/x
  3. Step 3: Cross multiply
    20,869.60x = 31,307.44 × 6,076.64
  4. Step 4: Simplify right side
    20,869.60x = 190,244,042.20
  5. Step 5: Solve for x
    x = 190,244,042.20/20,869.60
  6. Step 6: Final answer
    x = 9,115.85

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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.