Home / 11,142.73-16,702.85-6,985.66

Finding the Fourth Proportional to 11,142.73, 16,702.85 and 6,985.66

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Solution

The fourth proportional to 11,142.73, 16,702.85 and 6,985.66 is: 10,471.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.73 : 16,702.85 = 6,985.66 : x
  2. Step 2: Convert to fraction form
    11,142.73/16,702.85 = 6,985.66/x
  3. Step 3: Cross multiply
    11,142.73x = 16,702.85 × 6,985.66
  4. Step 4: Simplify right side
    11,142.73x = 116,680,438.16
  5. Step 5: Solve for x
    x = 116,680,438.16/11,142.73
  6. Step 6: Final answer
    x = 10,471.44

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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.