Home / 39,862.10-55,009.74-21,957.14

Finding the Fourth Proportional to 39,862.10, 55,009.74 and 21,957.14

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Solution

The fourth proportional to 39,862.10, 55,009.74 and 21,957.14 is: 30,300.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.10 : 55,009.74 = 21,957.14 : x
  2. Step 2: Convert to fraction form
    39,862.10/55,009.74 = 21,957.14/x
  3. Step 3: Cross multiply
    39,862.10x = 55,009.74 × 21,957.14
  4. Step 4: Simplify right side
    39,862.10x = 1,207,856,562.54
  5. Step 5: Solve for x
    x = 1,207,856,562.54/39,862.10
  6. Step 6: Final answer
    x = 30,300.88

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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.