Home / 29,987.20-41,399.36-19,928.96

Finding the Fourth Proportional to 29,987.20, 41,399.36 and 19,928.96

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Solution

The fourth proportional to 29,987.20, 41,399.36 and 19,928.96 is: 27,513.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,987.20 : 41,399.36 = 19,928.96 : x
  2. Step 2: Convert to fraction form
    29,987.20/41,399.36 = 19,928.96/x
  3. Step 3: Cross multiply
    29,987.20x = 41,399.36 × 19,928.96
  4. Step 4: Simplify right side
    29,987.20x = 825,046,189.47
  5. Step 5: Solve for x
    x = 825,046,189.47/29,987.20
  6. Step 6: Final answer
    x = 27,513.28

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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.