Home / 39,844.24-54,985.20-21,938.80

Finding the Fourth Proportional to 39,844.24, 54,985.20 and 21,938.80

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Solution

The fourth proportional to 39,844.24, 54,985.20 and 21,938.80 is: 30,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,844.24 : 54,985.20 = 21,938.80 : x
  2. Step 2: Convert to fraction form
    39,844.24/54,985.20 = 21,938.80/x
  3. Step 3: Cross multiply
    39,844.24x = 54,985.20 × 21,938.80
  4. Step 4: Simplify right side
    39,844.24x = 1,206,309,305.76
  5. Step 5: Solve for x
    x = 1,206,309,305.76/39,844.24
  6. Step 6: Final answer
    x = 30,275.63

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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.