Home / 39,862.87-55,010.51-21,957.46

Finding the Fourth Proportional to 39,862.87, 55,010.51 and 21,957.46

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Solution

The fourth proportional to 39,862.87, 55,010.51 and 21,957.46 is: 30,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.87 : 55,010.51 = 21,957.46 : x
  2. Step 2: Convert to fraction form
    39,862.87/55,010.51 = 21,957.46/x
  3. Step 3: Cross multiply
    39,862.87x = 55,010.51 × 21,957.46
  4. Step 4: Simplify right side
    39,862.87x = 1,207,890,963.12
  5. Step 5: Solve for x
    x = 1,207,890,963.12/39,862.87
  6. Step 6: Final answer
    x = 30,301.15

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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.