Home / 20,982.25-31,473.51-5,400.01

Finding the Fourth Proportional to 20,982.25, 31,473.51 and 5,400.01

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Solution

The fourth proportional to 20,982.25, 31,473.51 and 5,400.01 is: 8,100.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.25 : 31,473.51 = 5,400.01 : x
  2. Step 2: Convert to fraction form
    20,982.25/31,473.51 = 5,400.01/x
  3. Step 3: Cross multiply
    20,982.25x = 31,473.51 × 5,400.01
  4. Step 4: Simplify right side
    20,982.25x = 169,957,268.74
  5. Step 5: Solve for x
    x = 169,957,268.74/20,982.25
  6. Step 6: Final answer
    x = 8,100.05

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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.