Home / 39,882.47-55,035.81-21,974.58

Finding the Fourth Proportional to 39,882.47, 55,035.81 and 21,974.58

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Solution

The fourth proportional to 39,882.47, 55,035.81 and 21,974.58 is: 30,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,882.47 : 55,035.81 = 21,974.58 : x
  2. Step 2: Convert to fraction form
    39,882.47/55,035.81 = 21,974.58/x
  3. Step 3: Cross multiply
    39,882.47x = 55,035.81 × 21,974.58
  4. Step 4: Simplify right side
    39,882.47x = 1,209,388,809.71
  5. Step 5: Solve for x
    x = 1,209,388,809.71/39,882.47
  6. Step 6: Final answer
    x = 30,323.82

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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.