Home / 20,743.08-28,625.58-11,311.80

Finding the Fourth Proportional to 20,743.08, 28,625.58 and 11,311.80

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Solution

The fourth proportional to 20,743.08, 28,625.58 and 11,311.80 is: 15,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.08 : 28,625.58 = 11,311.80 : x
  2. Step 2: Convert to fraction form
    20,743.08/28,625.58 = 11,311.80/x
  3. Step 3: Cross multiply
    20,743.08x = 28,625.58 × 11,311.80
  4. Step 4: Simplify right side
    20,743.08x = 323,806,835.84
  5. Step 5: Solve for x
    x = 323,806,835.84/20,743.08
  6. Step 6: Final answer
    x = 15,610.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.