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Finding the Fourth Proportional to 13,203.12, 18,219.88 and 7,234.74

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Solution

The fourth proportional to 13,203.12, 18,219.88 and 7,234.74 is: 9,983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.12 : 18,219.88 = 7,234.74 : x
  2. Step 2: Convert to fraction form
    13,203.12/18,219.88 = 7,234.74/x
  3. Step 3: Cross multiply
    13,203.12x = 18,219.88 × 7,234.74
  4. Step 4: Simplify right side
    13,203.12x = 131,816,094.63
  5. Step 5: Solve for x
    x = 131,816,094.63/13,203.12
  6. Step 6: Final answer
    x = 9,983.71

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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.