Home / 39,659.89-54,732.18-21,755.65

Finding the Fourth Proportional to 39,659.89, 54,732.18 and 21,755.65

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Solution

The fourth proportional to 39,659.89, 54,732.18 and 21,755.65 is: 30,023.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.89 : 54,732.18 = 21,755.65 : x
  2. Step 2: Convert to fraction form
    39,659.89/54,732.18 = 21,755.65/x
  3. Step 3: Cross multiply
    39,659.89x = 54,732.18 × 21,755.65
  4. Step 4: Simplify right side
    39,659.89x = 1,190,734,151.82
  5. Step 5: Solve for x
    x = 1,190,734,151.82/39,659.89
  6. Step 6: Final answer
    x = 30,023.64

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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.