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Finding the Fourth Proportional to 11,014.68, 15,168.96 and 9,687.96

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Solution

The fourth proportional to 11,014.68, 15,168.96 and 9,687.96 is: 13,341.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,014.68 : 15,168.96 = 9,687.96 : x
  2. Step 2: Convert to fraction form
    11,014.68/15,168.96 = 9,687.96/x
  3. Step 3: Cross multiply
    11,014.68x = 15,168.96 × 9,687.96
  4. Step 4: Simplify right side
    11,014.68x = 146,956,277.72
  5. Step 5: Solve for x
    x = 146,956,277.72/11,014.68
  6. Step 6: Final answer
    x = 13,341.86

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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.