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Finding the Fourth Proportional to 18,005.08, 24,840.06 and 11,279

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Solution

The fourth proportional to 18,005.08, 24,840.06 and 11,279 is: 15,560.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.08 : 24,840.06 = 11,279 : x
  2. Step 2: Convert to fraction form
    18,005.08/24,840.06 = 11,279/x
  3. Step 3: Cross multiply
    18,005.08x = 24,840.06 × 11,279
  4. Step 4: Simplify right side
    18,005.08x = 280,171,036.74
  5. Step 5: Solve for x
    x = 280,171,036.74/18,005.08
  6. Step 6: Final answer
    x = 15,560.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.