Home / 39,799.80-54,922.59-21,649.95

Finding the Fourth Proportional to 39,799.80, 54,922.59 and 21,649.95

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Solution

The fourth proportional to 39,799.80, 54,922.59 and 21,649.95 is: 29,876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,799.80 : 54,922.59 = 21,649.95 : x
  2. Step 2: Convert to fraction form
    39,799.80/54,922.59 = 21,649.95/x
  3. Step 3: Cross multiply
    39,799.80x = 54,922.59 × 21,649.95
  4. Step 4: Simplify right side
    39,799.80x = 1,189,071,327.37
  5. Step 5: Solve for x
    x = 1,189,071,327.37/39,799.80
  6. Step 6: Final answer
    x = 29,876.31

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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.