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Finding the Fourth Proportional to 18,563.68, 27,812.02 and 12,308.88

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Solution

The fourth proportional to 18,563.68, 27,812.02 and 12,308.88 is: 18,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.68 : 27,812.02 = 12,308.88 : x
  2. Step 2: Convert to fraction form
    18,563.68/27,812.02 = 12,308.88/x
  3. Step 3: Cross multiply
    18,563.68x = 27,812.02 × 12,308.88
  4. Step 4: Simplify right side
    18,563.68x = 342,334,816.74
  5. Step 5: Solve for x
    x = 342,334,816.74/18,563.68
  6. Step 6: Final answer
    x = 18,441.11

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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.