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Finding the Fourth Proportional to 18,551.46, 27,819.90 and 7,455.18

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Solution

The fourth proportional to 18,551.46, 27,819.90 and 7,455.18 is: 11,179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.46 : 27,819.90 = 7,455.18 : x
  2. Step 2: Convert to fraction form
    18,551.46/27,819.90 = 7,455.18/x
  3. Step 3: Cross multiply
    18,551.46x = 27,819.90 × 7,455.18
  4. Step 4: Simplify right side
    18,551.46x = 207,402,362.08
  5. Step 5: Solve for x
    x = 207,402,362.08/18,551.46
  6. Step 6: Final answer
    x = 11,179.84

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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.