Home / 31,979.87-47,986.01-21,569.75

Finding the Fourth Proportional to 31,979.87, 47,986.01 and 21,569.75

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Solution

The fourth proportional to 31,979.87, 47,986.01 and 21,569.75 is: 32,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.87 : 47,986.01 = 21,569.75 : x
  2. Step 2: Convert to fraction form
    31,979.87/47,986.01 = 21,569.75/x
  3. Step 3: Cross multiply
    31,979.87x = 47,986.01 × 21,569.75
  4. Step 4: Simplify right side
    31,979.87x = 1,035,046,131.35
  5. Step 5: Solve for x
    x = 1,035,046,131.35/31,979.87
  6. Step 6: Final answer
    x = 32,365.55

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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.