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Finding the Fourth Proportional to 11,376.86, 17,065.28 and 7,103.84

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Solution

The fourth proportional to 11,376.86, 17,065.28 and 7,103.84 is: 10,655.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,376.86 : 17,065.28 = 7,103.84 : x
  2. Step 2: Convert to fraction form
    11,376.86/17,065.28 = 7,103.84/x
  3. Step 3: Cross multiply
    11,376.86x = 17,065.28 × 7,103.84
  4. Step 4: Simplify right side
    11,376.86x = 121,228,951.11
  5. Step 5: Solve for x
    x = 121,228,951.11/11,376.86
  6. Step 6: Final answer
    x = 10,655.75

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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.