Home / 39,836.15-54,973.89-21,931.02

Finding the Fourth Proportional to 39,836.15, 54,973.89 and 21,931.02

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Solution

The fourth proportional to 39,836.15, 54,973.89 and 21,931.02 is: 30,264.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,836.15 : 54,973.89 = 21,931.02 : x
  2. Step 2: Convert to fraction form
    39,836.15/54,973.89 = 21,931.02/x
  3. Step 3: Cross multiply
    39,836.15x = 54,973.89 × 21,931.02
  4. Step 4: Simplify right side
    39,836.15x = 1,205,633,481.07
  5. Step 5: Solve for x
    x = 1,205,633,481.07/39,836.15
  6. Step 6: Final answer
    x = 30,264.81

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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.