Home / 39,391.11-54,359.91-21,486.06

Finding the Fourth Proportional to 39,391.11, 54,359.91 and 21,486.06

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Solution

The fourth proportional to 39,391.11, 54,359.91 and 21,486.06 is: 29,650.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.11 : 54,359.91 = 21,486.06 : x
  2. Step 2: Convert to fraction form
    39,391.11/54,359.91 = 21,486.06/x
  3. Step 3: Cross multiply
    39,391.11x = 54,359.91 × 21,486.06
  4. Step 4: Simplify right side
    39,391.11x = 1,167,980,287.85
  5. Step 5: Solve for x
    x = 1,167,980,287.85/39,391.11
  6. Step 6: Final answer
    x = 29,650.86

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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.