Home / 11,139.80-16,713.20-6,702.31

Finding the Fourth Proportional to 11,139.80, 16,713.20 and 6,702.31

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Solution

The fourth proportional to 11,139.80, 16,713.20 and 6,702.31 is: 10,055.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.80 : 16,713.20 = 6,702.31 : x
  2. Step 2: Convert to fraction form
    11,139.80/16,713.20 = 6,702.31/x
  3. Step 3: Cross multiply
    11,139.80x = 16,713.20 × 6,702.31
  4. Step 4: Simplify right side
    11,139.80x = 112,017,085.14
  5. Step 5: Solve for x
    x = 112,017,085.14/11,139.80
  6. Step 6: Final answer
    x = 10,055.58

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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.