Home / 11,943.09-17,880.84-9,128.70

Finding the Fourth Proportional to 11,943.09, 17,880.84 and 9,128.70

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Solution

The fourth proportional to 11,943.09, 17,880.84 and 9,128.70 is: 13,667.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.09 : 17,880.84 = 9,128.70 : x
  2. Step 2: Convert to fraction form
    11,943.09/17,880.84 = 9,128.70/x
  3. Step 3: Cross multiply
    11,943.09x = 17,880.84 × 9,128.70
  4. Step 4: Simplify right side
    11,943.09x = 163,228,824.11
  5. Step 5: Solve for x
    x = 163,228,824.11/11,943.09
  6. Step 6: Final answer
    x = 13,667.22

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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.