Home / 39,759.09-54,868.01-21,854.12

Finding the Fourth Proportional to 39,759.09, 54,868.01 and 21,854.12

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Solution

The fourth proportional to 39,759.09, 54,868.01 and 21,854.12 is: 30,158.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.09 : 54,868.01 = 21,854.12 : x
  2. Step 2: Convert to fraction form
    39,759.09/54,868.01 = 21,854.12/x
  3. Step 3: Cross multiply
    39,759.09x = 54,868.01 × 21,854.12
  4. Step 4: Simplify right side
    39,759.09x = 1,199,091,691.09
  5. Step 5: Solve for x
    x = 1,199,091,691.09/39,759.09
  6. Step 6: Final answer
    x = 30,158.93

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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.