Home / 39,189.70-54,081.61-21,284.56

Finding the Fourth Proportional to 39,189.70, 54,081.61 and 21,284.56

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Solution

The fourth proportional to 39,189.70, 54,081.61 and 21,284.56 is: 29,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189.70 : 54,081.61 = 21,284.56 : x
  2. Step 2: Convert to fraction form
    39,189.70/54,081.61 = 21,284.56/x
  3. Step 3: Cross multiply
    39,189.70x = 54,081.61 × 21,284.56
  4. Step 4: Simplify right side
    39,189.70x = 1,151,103,272.94
  5. Step 5: Solve for x
    x = 1,151,103,272.94/39,189.70
  6. Step 6: Final answer
    x = 29,372.60

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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.