Home / 13,812.53-19,067.67-8,145.36

Finding the Fourth Proportional to 13,812.53, 19,067.67 and 8,145.36

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Solution

The fourth proportional to 13,812.53, 19,067.67 and 8,145.36 is: 11,244.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.53 : 19,067.67 = 8,145.36 : x
  2. Step 2: Convert to fraction form
    13,812.53/19,067.67 = 8,145.36/x
  3. Step 3: Cross multiply
    13,812.53x = 19,067.67 × 8,145.36
  4. Step 4: Simplify right side
    13,812.53x = 155,313,036.51
  5. Step 5: Solve for x
    x = 155,313,036.51/13,812.53
  6. Step 6: Final answer
    x = 11,244.36

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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.