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Finding the Fourth Proportional to 12,271.01, 18,393.38 and 4,865.21

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Solution

The fourth proportional to 12,271.01, 18,393.38 and 4,865.21 is: 7,292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,271.01 : 18,393.38 = 4,865.21 : x
  2. Step 2: Convert to fraction form
    12,271.01/18,393.38 = 4,865.21/x
  3. Step 3: Cross multiply
    12,271.01x = 18,393.38 × 4,865.21
  4. Step 4: Simplify right side
    12,271.01x = 89,487,631.98
  5. Step 5: Solve for x
    x = 89,487,631.98/12,271.01
  6. Step 6: Final answer
    x = 7,292.61

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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.