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Finding the Fourth Proportional to 9,009.67, 12,441.90 and 8,518.81

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Solution

The fourth proportional to 9,009.67, 12,441.90 and 8,518.81 is: 11,764.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,009.67 : 12,441.90 = 8,518.81 : x
  2. Step 2: Convert to fraction form
    9,009.67/12,441.90 = 8,518.81/x
  3. Step 3: Cross multiply
    9,009.67x = 12,441.90 × 8,518.81
  4. Step 4: Simplify right side
    9,009.67x = 105,990,182.14
  5. Step 5: Solve for x
    x = 105,990,182.14/9,009.67
  6. Step 6: Final answer
    x = 11,764.05

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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.