Home / 39,188.70-54,080.24-21,283.56

Finding the Fourth Proportional to 39,188.70, 54,080.24 and 21,283.56

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Solution

The fourth proportional to 39,188.70, 54,080.24 and 21,283.56 is: 29,371.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,188.70 : 54,080.24 = 21,283.56 : x
  2. Step 2: Convert to fraction form
    39,188.70/54,080.24 = 21,283.56/x
  3. Step 3: Cross multiply
    39,188.70x = 54,080.24 × 21,283.56
  4. Step 4: Simplify right side
    39,188.70x = 1,151,019,926.44
  5. Step 5: Solve for x
    x = 1,151,019,926.44/39,188.70
  6. Step 6: Final answer
    x = 29,371.22

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1.5x scale

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.