Home / 11,139.11-16,702.18-4,214.15

Finding the Fourth Proportional to 11,139.11, 16,702.18 and 4,214.15

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Solution

The fourth proportional to 11,139.11, 16,702.18 and 4,214.15 is: 6,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.11 : 16,702.18 = 4,214.15 : x
  2. Step 2: Convert to fraction form
    11,139.11/16,702.18 = 4,214.15/x
  3. Step 3: Cross multiply
    11,139.11x = 16,702.18 × 4,214.15
  4. Step 4: Simplify right side
    11,139.11x = 70,385,491.85
  5. Step 5: Solve for x
    x = 70,385,491.85/11,139.11
  6. Step 6: Final answer
    x = 6,318.77

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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.