Home / 39,795.08-54,913.88-21,891.04

Finding the Fourth Proportional to 39,795.08, 54,913.88 and 21,891.04

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Solution

The fourth proportional to 39,795.08, 54,913.88 and 21,891.04 is: 30,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.08 : 54,913.88 = 21,891.04 : x
  2. Step 2: Convert to fraction form
    39,795.08/54,913.88 = 21,891.04/x
  3. Step 3: Cross multiply
    39,795.08x = 54,913.88 × 21,891.04
  4. Step 4: Simplify right side
    39,795.08x = 1,202,121,943.64
  5. Step 5: Solve for x
    x = 1,202,121,943.64/39,795.08
  6. Step 6: Final answer
    x = 30,207.80

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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.