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Finding the Fourth Proportional to 18,505.64, 27,760.08 and 8,510.24

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Solution

The fourth proportional to 18,505.64, 27,760.08 and 8,510.24 is: 12,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.64 : 27,760.08 = 8,510.24 : x
  2. Step 2: Convert to fraction form
    18,505.64/27,760.08 = 8,510.24/x
  3. Step 3: Cross multiply
    18,505.64x = 27,760.08 × 8,510.24
  4. Step 4: Simplify right side
    18,505.64x = 236,244,943.22
  5. Step 5: Solve for x
    x = 236,244,943.22/18,505.64
  6. Step 6: Final answer
    x = 12,766.10

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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.