Home / 39,806.33-54,931.37-21,901.19

Finding the Fourth Proportional to 39,806.33, 54,931.37 and 21,901.19

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Solution

The fourth proportional to 39,806.33, 54,931.37 and 21,901.19 is: 30,222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.33 : 54,931.37 = 21,901.19 : x
  2. Step 2: Convert to fraction form
    39,806.33/54,931.37 = 21,901.19/x
  3. Step 3: Cross multiply
    39,806.33x = 54,931.37 × 21,901.19
  4. Step 4: Simplify right side
    39,806.33x = 1,203,061,987.17
  5. Step 5: Solve for x
    x = 1,203,061,987.17/39,806.33
  6. Step 6: Final answer
    x = 30,222.89

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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.