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Finding the Fourth Proportional to 11,138.76, 16,695.18 and 11,015.64

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Solution

The fourth proportional to 11,138.76, 16,695.18 and 11,015.64 is: 16,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.76 : 16,695.18 = 11,015.64 : x
  2. Step 2: Convert to fraction form
    11,138.76/16,695.18 = 11,015.64/x
  3. Step 3: Cross multiply
    11,138.76x = 16,695.18 × 11,015.64
  4. Step 4: Simplify right side
    11,138.76x = 183,908,092.62
  5. Step 5: Solve for x
    x = 183,908,092.62/11,138.76
  6. Step 6: Final answer
    x = 16,510.64

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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.