Home / 39,195.57-54,090.90-21,291.60

Finding the Fourth Proportional to 39,195.57, 54,090.90 and 21,291.60

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Solution

The fourth proportional to 39,195.57, 54,090.90 and 21,291.60 is: 29,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.57 : 54,090.90 = 21,291.60 : x
  2. Step 2: Convert to fraction form
    39,195.57/54,090.90 = 21,291.60/x
  3. Step 3: Cross multiply
    39,195.57x = 54,090.90 × 21,291.60
  4. Step 4: Simplify right side
    39,195.57x = 1,151,681,806.44
  5. Step 5: Solve for x
    x = 1,151,681,806.44/39,195.57
  6. Step 6: Final answer
    x = 29,382.96

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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.