Home / 39,748.20-54,851.40-21,843.20

Finding the Fourth Proportional to 39,748.20, 54,851.40 and 21,843.20

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Solution

The fourth proportional to 39,748.20, 54,851.40 and 21,843.20 is: 30,143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,748.20 : 54,851.40 = 21,843.20 : x
  2. Step 2: Convert to fraction form
    39,748.20/54,851.40 = 21,843.20/x
  3. Step 3: Cross multiply
    39,748.20x = 54,851.40 × 21,843.20
  4. Step 4: Simplify right side
    39,748.20x = 1,198,130,100.48
  5. Step 5: Solve for x
    x = 1,198,130,100.48/39,748.20
  6. Step 6: Final answer
    x = 30,143.00

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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.