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Finding the Fourth Proportional to 18,007.41, 27,011.12 and 4,859.78

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Solution

The fourth proportional to 18,007.41, 27,011.12 and 4,859.78 is: 7,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.41 : 27,011.12 = 4,859.78 : x
  2. Step 2: Convert to fraction form
    18,007.41/27,011.12 = 4,859.78/x
  3. Step 3: Cross multiply
    18,007.41x = 27,011.12 × 4,859.78
  4. Step 4: Simplify right side
    18,007.41x = 131,268,100.75
  5. Step 5: Solve for x
    x = 131,268,100.75/18,007.41
  6. Step 6: Final answer
    x = 7,289.67

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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.