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Finding the Fourth Proportional to 18,235.20, 27,349.20 and 8,875.20

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Solution

The fourth proportional to 18,235.20, 27,349.20 and 8,875.20 is: 13,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.20 : 27,349.20 = 8,875.20 : x
  2. Step 2: Convert to fraction form
    18,235.20/27,349.20 = 8,875.20/x
  3. Step 3: Cross multiply
    18,235.20x = 27,349.20 × 8,875.20
  4. Step 4: Simplify right side
    18,235.20x = 242,729,619.84
  5. Step 5: Solve for x
    x = 242,729,619.84/18,235.20
  6. Step 6: Final answer
    x = 13,311.05

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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.