Home / 12,928.20-17,840.88-7,263

Finding the Fourth Proportional to 12,928.20, 17,840.88 and 7,263

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Solution

The fourth proportional to 12,928.20, 17,840.88 and 7,263 is: 10,022.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.20 : 17,840.88 = 7,263 : x
  2. Step 2: Convert to fraction form
    12,928.20/17,840.88 = 7,263/x
  3. Step 3: Cross multiply
    12,928.20x = 17,840.88 × 7,263
  4. Step 4: Simplify right side
    12,928.20x = 129,578,311.44
  5. Step 5: Solve for x
    x = 129,578,311.44/12,928.20
  6. Step 6: Final answer
    x = 10,022.92

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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.