Home / 39,845.70-54,985.02-21,937.29

Finding the Fourth Proportional to 39,845.70, 54,985.02 and 21,937.29

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Solution

The fourth proportional to 39,845.70, 54,985.02 and 21,937.29 is: 30,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.70 : 54,985.02 = 21,937.29 : x
  2. Step 2: Convert to fraction form
    39,845.70/54,985.02 = 21,937.29/x
  3. Step 3: Cross multiply
    39,845.70x = 54,985.02 × 21,937.29
  4. Step 4: Simplify right side
    39,845.70x = 1,206,222,329.40
  5. Step 5: Solve for x
    x = 1,206,222,329.40/39,845.70
  6. Step 6: Final answer
    x = 30,272.33

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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.