Home / 39,769.80-54,881.83-21,864.65

Finding the Fourth Proportional to 39,769.80, 54,881.83 and 21,864.65

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Solution

The fourth proportional to 39,769.80, 54,881.83 and 21,864.65 is: 30,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,769.80 : 54,881.83 = 21,864.65 : x
  2. Step 2: Convert to fraction form
    39,769.80/54,881.83 = 21,864.65/x
  3. Step 3: Cross multiply
    39,769.80x = 54,881.83 × 21,864.65
  4. Step 4: Simplify right side
    39,769.80x = 1,199,972,004.31
  5. Step 5: Solve for x
    x = 1,199,972,004.31/39,769.80
  6. Step 6: Final answer
    x = 30,172.95

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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.