Home / 12,928.10-17,839.52-7,261.56

Finding the Fourth Proportional to 12,928.10, 17,839.52 and 7,261.56

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Solution

The fourth proportional to 12,928.10, 17,839.52 and 7,261.56 is: 10,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.10 : 17,839.52 = 7,261.56 : x
  2. Step 2: Convert to fraction form
    12,928.10/17,839.52 = 7,261.56/x
  3. Step 3: Cross multiply
    12,928.10x = 17,839.52 × 7,261.56
  4. Step 4: Simplify right side
    12,928.10x = 129,542,753.14
  5. Step 5: Solve for x
    x = 129,542,753.14/12,928.10
  6. Step 6: Final answer
    x = 10,020.25

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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.