Home / 39,969.80-55,157.56-22,065.36

Finding the Fourth Proportional to 39,969.80, 55,157.56 and 22,065.36

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Solution

The fourth proportional to 39,969.80, 55,157.56 and 22,065.36 is: 30,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.80 : 55,157.56 = 22,065.36 : x
  2. Step 2: Convert to fraction form
    39,969.80/55,157.56 = 22,065.36/x
  3. Step 3: Cross multiply
    39,969.80x = 55,157.56 × 22,065.36
  4. Step 4: Simplify right side
    39,969.80x = 1,217,071,418.12
  5. Step 5: Solve for x
    x = 1,217,071,418.12/39,969.80
  6. Step 6: Final answer
    x = 30,449.78

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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.