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Finding the Fourth Proportional to 13,674.42, 18,867.81 and 8,009.67

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Solution

The fourth proportional to 13,674.42, 18,867.81 and 8,009.67 is: 11,051.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.42 : 18,867.81 = 8,009.67 : x
  2. Step 2: Convert to fraction form
    13,674.42/18,867.81 = 8,009.67/x
  3. Step 3: Cross multiply
    13,674.42x = 18,867.81 × 8,009.67
  4. Step 4: Simplify right side
    13,674.42x = 151,124,931.72
  5. Step 5: Solve for x
    x = 151,124,931.72/13,674.42
  6. Step 6: Final answer
    x = 11,051.65

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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.