Home / 39,789.68-54,909.48-21,884.24

Finding the Fourth Proportional to 39,789.68, 54,909.48 and 21,884.24

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Solution

The fourth proportional to 39,789.68, 54,909.48 and 21,884.24 is: 30,200.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.68 : 54,909.48 = 21,884.24 : x
  2. Step 2: Convert to fraction form
    39,789.68/54,909.48 = 21,884.24/x
  3. Step 3: Cross multiply
    39,789.68x = 54,909.48 × 21,884.24
  4. Step 4: Simplify right side
    39,789.68x = 1,201,652,238.60
  5. Step 5: Solve for x
    x = 1,201,652,238.60/39,789.68
  6. Step 6: Final answer
    x = 30,200.10

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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.