Home / 39,755.38-54,862.32-21,851.50

Finding the Fourth Proportional to 39,755.38, 54,862.32 and 21,851.50

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Solution

The fourth proportional to 39,755.38, 54,862.32 and 21,851.50 is: 30,155.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.38 : 54,862.32 = 21,851.50 : x
  2. Step 2: Convert to fraction form
    39,755.38/54,862.32 = 21,851.50/x
  3. Step 3: Cross multiply
    39,755.38x = 54,862.32 × 21,851.50
  4. Step 4: Simplify right side
    39,755.38x = 1,198,823,985.48
  5. Step 5: Solve for x
    x = 1,198,823,985.48/39,755.38
  6. Step 6: Final answer
    x = 30,155.01

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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.