Home / 12,768.24-17,618.40-7,102.56

Finding the Fourth Proportional to 12,768.24, 17,618.40 and 7,102.56

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Solution

The fourth proportional to 12,768.24, 17,618.40 and 7,102.56 is: 9,800.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.24 : 17,618.40 = 7,102.56 : x
  2. Step 2: Convert to fraction form
    12,768.24/17,618.40 = 7,102.56/x
  3. Step 3: Cross multiply
    12,768.24x = 17,618.40 × 7,102.56
  4. Step 4: Simplify right side
    12,768.24x = 125,135,743.10
  5. Step 5: Solve for x
    x = 125,135,743.10/12,768.24
  6. Step 6: Final answer
    x = 9,800.55

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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.