Home / 39,760.12-54,868.08-21,854.26

Finding the Fourth Proportional to 39,760.12, 54,868.08 and 21,854.26

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Solution

The fourth proportional to 39,760.12, 54,868.08 and 21,854.26 is: 30,158.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,760.12 : 54,868.08 = 21,854.26 : x
  2. Step 2: Convert to fraction form
    39,760.12/54,868.08 = 21,854.26/x
  3. Step 3: Cross multiply
    39,760.12x = 54,868.08 × 21,854.26
  4. Step 4: Simplify right side
    39,760.12x = 1,199,101,286.02
  5. Step 5: Solve for x
    x = 1,199,101,286.02/39,760.12
  6. Step 6: Final answer
    x = 30,158.39

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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.