Home / 39,614.51-54,665.78-21,705.90

Finding the Fourth Proportional to 39,614.51, 54,665.78 and 21,705.90

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Solution

The fourth proportional to 39,614.51, 54,665.78 and 21,705.90 is: 29,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,614.51 : 54,665.78 = 21,705.90 : x
  2. Step 2: Convert to fraction form
    39,614.51/54,665.78 = 21,705.90/x
  3. Step 3: Cross multiply
    39,614.51x = 54,665.78 × 21,705.90
  4. Step 4: Simplify right side
    39,614.51x = 1,186,569,845.57
  5. Step 5: Solve for x
    x = 1,186,569,845.57/39,614.51
  6. Step 6: Final answer
    x = 29,952.91

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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.