Home / 39,891.18-55,047.68-21,982.62

Finding the Fourth Proportional to 39,891.18, 55,047.68 and 21,982.62

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Solution

The fourth proportional to 39,891.18, 55,047.68 and 21,982.62 is: 30,334.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.18 : 55,047.68 = 21,982.62 : x
  2. Step 2: Convert to fraction form
    39,891.18/55,047.68 = 21,982.62/x
  3. Step 3: Cross multiply
    39,891.18x = 55,047.68 × 21,982.62
  4. Step 4: Simplify right side
    39,891.18x = 1,210,092,231.32
  5. Step 5: Solve for x
    x = 1,210,092,231.32/39,891.18
  6. Step 6: Final answer
    x = 30,334.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.