Home / 39,188.90-54,080.66-21,283.91

Finding the Fourth Proportional to 39,188.90, 54,080.66 and 21,283.91

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Solution

The fourth proportional to 39,188.90, 54,080.66 and 21,283.91 is: 29,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,188.90 : 54,080.66 = 21,283.91 : x
  2. Step 2: Convert to fraction form
    39,188.90/54,080.66 = 21,283.91/x
  3. Step 3: Cross multiply
    39,188.90x = 54,080.66 × 21,283.91
  4. Step 4: Simplify right side
    39,188.90x = 1,151,047,523.36
  5. Step 5: Solve for x
    x = 1,151,047,523.36/39,188.90
  6. Step 6: Final answer
    x = 29,371.78

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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.