Home / 20,753.82-28,640.93-11,800.76

Finding the Fourth Proportional to 20,753.82, 28,640.93 and 11,800.76

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Solution

The fourth proportional to 20,753.82, 28,640.93 and 11,800.76 is: 16,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.82 : 28,640.93 = 11,800.76 : x
  2. Step 2: Convert to fraction form
    20,753.82/28,640.93 = 11,800.76/x
  3. Step 3: Cross multiply
    20,753.82x = 28,640.93 × 11,800.76
  4. Step 4: Simplify right side
    20,753.82x = 337,984,538.90
  5. Step 5: Solve for x
    x = 337,984,538.90/20,753.82
  6. Step 6: Final answer
    x = 16,285.41

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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.