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Finding the Fourth Proportional to 18,005.10, 27,011.70 and 5,525.70

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Solution

The fourth proportional to 18,005.10, 27,011.70 and 5,525.70 is: 8,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.10 : 27,011.70 = 5,525.70 : x
  2. Step 2: Convert to fraction form
    18,005.10/27,011.70 = 5,525.70/x
  3. Step 3: Cross multiply
    18,005.10x = 27,011.70 × 5,525.70
  4. Step 4: Simplify right side
    18,005.10x = 149,258,550.69
  5. Step 5: Solve for x
    x = 149,258,550.69/18,005.10
  6. Step 6: Final answer
    x = 8,289.79

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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.