Home / 39,990.80-55,186.62-22,086.02

Finding the Fourth Proportional to 39,990.80, 55,186.62 and 22,086.02

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Solution

The fourth proportional to 39,990.80, 55,186.62 and 22,086.02 is: 30,478.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.80 : 55,186.62 = 22,086.02 : x
  2. Step 2: Convert to fraction form
    39,990.80/55,186.62 = 22,086.02/x
  3. Step 3: Cross multiply
    39,990.80x = 55,186.62 × 22,086.02
  4. Step 4: Simplify right side
    39,990.80x = 1,218,852,848.20
  5. Step 5: Solve for x
    x = 1,218,852,848.20/39,990.80
  6. Step 6: Final answer
    x = 30,478.33

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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.