Home / 39,748.12-54,851.28-21,843.10

Finding the Fourth Proportional to 39,748.12, 54,851.28 and 21,843.10

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Solution

The fourth proportional to 39,748.12, 54,851.28 and 21,843.10 is: 30,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,748.12 : 54,851.28 = 21,843.10 : x
  2. Step 2: Convert to fraction form
    39,748.12/54,851.28 = 21,843.10/x
  3. Step 3: Cross multiply
    39,748.12x = 54,851.28 × 21,843.10
  4. Step 4: Simplify right side
    39,748.12x = 1,198,121,980.82
  5. Step 5: Solve for x
    x = 1,198,121,980.82/39,748.12
  6. Step 6: Final answer
    x = 30,142.86

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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.