Home / 39,877.70-59,926.43-21,171.75

Finding the Fourth Proportional to 39,877.70, 59,926.43 and 21,171.75

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Solution

The fourth proportional to 39,877.70, 59,926.43 and 21,171.75 is: 31,815.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.70 : 59,926.43 = 21,171.75 : x
  2. Step 2: Convert to fraction form
    39,877.70/59,926.43 = 21,171.75/x
  3. Step 3: Cross multiply
    39,877.70x = 59,926.43 × 21,171.75
  4. Step 4: Simplify right side
    39,877.70x = 1,268,747,288.49
  5. Step 5: Solve for x
    x = 1,268,747,288.49/39,877.70
  6. Step 6: Final answer
    x = 31,815.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.