Home / 20,743.13-28,625.52-11,311.76

Finding the Fourth Proportional to 20,743.13, 28,625.52 and 11,311.76

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Solution

The fourth proportional to 20,743.13, 28,625.52 and 11,311.76 is: 15,610.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.13 : 28,625.52 = 11,311.76 : x
  2. Step 2: Convert to fraction form
    20,743.13/28,625.52 = 11,311.76/x
  3. Step 3: Cross multiply
    20,743.13x = 28,625.52 × 11,311.76
  4. Step 4: Simplify right side
    20,743.13x = 323,804,868.99
  5. Step 5: Solve for x
    x = 323,804,868.99/20,743.13
  6. Step 6: Final answer
    x = 15,610.23

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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.