Home / 20,743.20-31,113.84-6,702.60

Finding the Fourth Proportional to 20,743.20, 31,113.84 and 6,702.60

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Solution

The fourth proportional to 20,743.20, 31,113.84 and 6,702.60 is: 10,053.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.20 : 31,113.84 = 6,702.60 : x
  2. Step 2: Convert to fraction form
    20,743.20/31,113.84 = 6,702.60/x
  3. Step 3: Cross multiply
    20,743.20x = 31,113.84 × 6,702.60
  4. Step 4: Simplify right side
    20,743.20x = 208,543,623.98
  5. Step 5: Solve for x
    x = 208,543,623.98/20,743.20
  6. Step 6: Final answer
    x = 10,053.59

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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.