Home / 39,660.13-54,731.61-21,754.81

Finding the Fourth Proportional to 39,660.13, 54,731.61 and 21,754.81

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Solution

The fourth proportional to 39,660.13, 54,731.61 and 21,754.81 is: 30,021.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.13 : 54,731.61 = 21,754.81 : x
  2. Step 2: Convert to fraction form
    39,660.13/54,731.61 = 21,754.81/x
  3. Step 3: Cross multiply
    39,660.13x = 54,731.61 × 21,754.81
  4. Step 4: Simplify right side
    39,660.13x = 1,190,675,776.54
  5. Step 5: Solve for x
    x = 1,190,675,776.54/39,660.13
  6. Step 6: Final answer
    x = 30,021.98

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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.