Home / 39,144.33-54,017.69-21,238.74

Finding the Fourth Proportional to 39,144.33, 54,017.69 and 21,238.74

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Solution

The fourth proportional to 39,144.33, 54,017.69 and 21,238.74 is: 29,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,144.33 : 54,017.69 = 21,238.74 : x
  2. Step 2: Convert to fraction form
    39,144.33/54,017.69 = 21,238.74/x
  3. Step 3: Cross multiply
    39,144.33x = 54,017.69 × 21,238.74
  4. Step 4: Simplify right side
    39,144.33x = 1,147,267,567.12
  5. Step 5: Solve for x
    x = 1,147,267,567.12/39,144.33
  6. Step 6: Final answer
    x = 29,308.65

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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.