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Finding the Fourth Proportional to 11,318.83, 16,978.23 and 4,298.83

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Solution

The fourth proportional to 11,318.83, 16,978.23 and 4,298.83 is: 6,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.83 : 16,978.23 = 4,298.83 : x
  2. Step 2: Convert to fraction form
    11,318.83/16,978.23 = 4,298.83/x
  3. Step 3: Cross multiply
    11,318.83x = 16,978.23 × 4,298.83
  4. Step 4: Simplify right side
    11,318.83x = 72,986,489.88
  5. Step 5: Solve for x
    x = 72,986,489.88/11,318.83
  6. Step 6: Final answer
    x = 6,448.24

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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.