Home / 39,363.81-54,320.51-21,458.43

Finding the Fourth Proportional to 39,363.81, 54,320.51 and 21,458.43

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Solution

The fourth proportional to 39,363.81, 54,320.51 and 21,458.43 is: 29,611.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,363.81 : 54,320.51 = 21,458.43 : x
  2. Step 2: Convert to fraction form
    39,363.81/54,320.51 = 21,458.43/x
  3. Step 3: Cross multiply
    39,363.81x = 54,320.51 × 21,458.43
  4. Step 4: Simplify right side
    39,363.81x = 1,165,632,754.11
  5. Step 5: Solve for x
    x = 1,165,632,754.11/39,363.81
  6. Step 6: Final answer
    x = 29,611.79

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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.