Home / 20,777.54-31,171.65-5,987.61

Finding the Fourth Proportional to 20,777.54, 31,171.65 and 5,987.61

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Solution

The fourth proportional to 20,777.54, 31,171.65 and 5,987.61 is: 8,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.54 : 31,171.65 = 5,987.61 : x
  2. Step 2: Convert to fraction form
    20,777.54/31,171.65 = 5,987.61/x
  3. Step 3: Cross multiply
    20,777.54x = 31,171.65 × 5,987.61
  4. Step 4: Simplify right side
    20,777.54x = 186,643,683.26
  5. Step 5: Solve for x
    x = 186,643,683.26/20,777.54
  6. Step 6: Final answer
    x = 8,982.96

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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.