Home / 12,101.28-18,159.72-5,175.84

Finding the Fourth Proportional to 12,101.28, 18,159.72 and 5,175.84

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Solution

The fourth proportional to 12,101.28, 18,159.72 and 5,175.84 is: 7,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.28 : 18,159.72 = 5,175.84 : x
  2. Step 2: Convert to fraction form
    12,101.28/18,159.72 = 5,175.84/x
  3. Step 3: Cross multiply
    12,101.28x = 18,159.72 × 5,175.84
  4. Step 4: Simplify right side
    12,101.28x = 93,991,805.16
  5. Step 5: Solve for x
    x = 93,991,805.16/12,101.28
  6. Step 6: Final answer
    x = 7,767.10

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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.