Home / 12,425.76-17,145.60-7,119.84

Finding the Fourth Proportional to 12,425.76, 17,145.60 and 7,119.84

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Solution

The fourth proportional to 12,425.76, 17,145.60 and 7,119.84 is: 9,824.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.76 : 17,145.60 = 7,119.84 : x
  2. Step 2: Convert to fraction form
    12,425.76/17,145.60 = 7,119.84/x
  3. Step 3: Cross multiply
    12,425.76x = 17,145.60 × 7,119.84
  4. Step 4: Simplify right side
    12,425.76x = 122,073,928.70
  5. Step 5: Solve for x
    x = 122,073,928.70/12,425.76
  6. Step 6: Final answer
    x = 9,824.26

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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.