Home / 39,845.64-54,984.98-21,942.20

Finding the Fourth Proportional to 39,845.64, 54,984.98 and 21,942.20

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Solution

The fourth proportional to 39,845.64, 54,984.98 and 21,942.20 is: 30,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.64 : 54,984.98 = 21,942.20 : x
  2. Step 2: Convert to fraction form
    39,845.64/54,984.98 = 21,942.20/x
  3. Step 3: Cross multiply
    39,845.64x = 54,984.98 × 21,942.20
  4. Step 4: Simplify right side
    39,845.64x = 1,206,491,428.16
  5. Step 5: Solve for x
    x = 1,206,491,428.16/39,845.64
  6. Step 6: Final answer
    x = 30,279.13

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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.