Home / 12,720.48-19,081.96-5,327.24

Finding the Fourth Proportional to 12,720.48, 19,081.96 and 5,327.24

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Solution

The fourth proportional to 12,720.48, 19,081.96 and 5,327.24 is: 7,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.48 : 19,081.96 = 5,327.24 : x
  2. Step 2: Convert to fraction form
    12,720.48/19,081.96 = 5,327.24/x
  3. Step 3: Cross multiply
    12,720.48x = 19,081.96 × 5,327.24
  4. Step 4: Simplify right side
    12,720.48x = 101,654,180.59
  5. Step 5: Solve for x
    x = 101,654,180.59/12,720.48
  6. Step 6: Final answer
    x = 7,991.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.