Home / 39,454.95-54,449.01-21,550.80

Finding the Fourth Proportional to 39,454.95, 54,449.01 and 21,550.80

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Solution

The fourth proportional to 39,454.95, 54,449.01 and 21,550.80 is: 29,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,454.95 : 54,449.01 = 21,550.80 : x
  2. Step 2: Convert to fraction form
    39,454.95/54,449.01 = 21,550.80/x
  3. Step 3: Cross multiply
    39,454.95x = 54,449.01 × 21,550.80
  4. Step 4: Simplify right side
    39,454.95x = 1,173,419,724.71
  5. Step 5: Solve for x
    x = 1,173,419,724.71/39,454.95
  6. Step 6: Final answer
    x = 29,740.75

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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.