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Finding the Fourth Proportional to 12,640.04, 18,960.18 and 4,847

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Solution

The fourth proportional to 12,640.04, 18,960.18 and 4,847 is: 7,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.04 : 18,960.18 = 4,847 : x
  2. Step 2: Convert to fraction form
    12,640.04/18,960.18 = 4,847/x
  3. Step 3: Cross multiply
    12,640.04x = 18,960.18 × 4,847
  4. Step 4: Simplify right side
    12,640.04x = 91,899,992.46
  5. Step 5: Solve for x
    x = 91,899,992.46/12,640.04
  6. Step 6: Final answer
    x = 7,270.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.