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Finding the Fourth Proportional to 18,143.64, 27,190.08 and 9,828.18

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Solution

The fourth proportional to 18,143.64, 27,190.08 and 9,828.18 is: 14,728.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.64 : 27,190.08 = 9,828.18 : x
  2. Step 2: Convert to fraction form
    18,143.64/27,190.08 = 9,828.18/x
  3. Step 3: Cross multiply
    18,143.64x = 27,190.08 × 9,828.18
  4. Step 4: Simplify right side
    18,143.64x = 267,229,000.45
  5. Step 5: Solve for x
    x = 267,229,000.45/18,143.64
  6. Step 6: Final answer
    x = 14,728.52

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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.