Home / 12,720.38-19,067.54-5,329.13

Finding the Fourth Proportional to 12,720.38, 19,067.54 and 5,329.13

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Solution

The fourth proportional to 12,720.38, 19,067.54 and 5,329.13 is: 7,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.38 : 19,067.54 = 5,329.13 : x
  2. Step 2: Convert to fraction form
    12,720.38/19,067.54 = 5,329.13/x
  3. Step 3: Cross multiply
    12,720.38x = 19,067.54 × 5,329.13
  4. Step 4: Simplify right side
    12,720.38x = 101,613,277.46
  5. Step 5: Solve for x
    x = 101,613,277.46/12,720.38
  6. Step 6: Final answer
    x = 7,988.23

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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.