Home / 12,441.44-17,172.56-7,139.04

Finding the Fourth Proportional to 12,441.44, 17,172.56 and 7,139.04

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Solution

The fourth proportional to 12,441.44, 17,172.56 and 7,139.04 is: 9,853.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,441.44 : 17,172.56 = 7,139.04 : x
  2. Step 2: Convert to fraction form
    12,441.44/17,172.56 = 7,139.04/x
  3. Step 3: Cross multiply
    12,441.44x = 17,172.56 × 7,139.04
  4. Step 4: Simplify right side
    12,441.44x = 122,595,592.74
  5. Step 5: Solve for x
    x = 122,595,592.74/12,441.44
  6. Step 6: Final answer
    x = 9,853.81

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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.