Home / 13,891.36-20,812.72-11,566.28

Finding the Fourth Proportional to 13,891.36, 20,812.72 and 11,566.28

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Solution

The fourth proportional to 13,891.36, 20,812.72 and 11,566.28 is: 17,329.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.36 : 20,812.72 = 11,566.28 : x
  2. Step 2: Convert to fraction form
    13,891.36/20,812.72 = 11,566.28/x
  3. Step 3: Cross multiply
    13,891.36x = 20,812.72 × 11,566.28
  4. Step 4: Simplify right side
    13,891.36x = 240,725,747.08
  5. Step 5: Solve for x
    x = 240,725,747.08/13,891.36
  6. Step 6: Final answer
    x = 17,329.17

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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.