Home / 20,910.68-28,857.34-11,835.34

Finding the Fourth Proportional to 20,910.68, 28,857.34 and 11,835.34

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Solution

The fourth proportional to 20,910.68, 28,857.34 and 11,835.34 is: 16,333.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.68 : 28,857.34 = 11,835.34 : x
  2. Step 2: Convert to fraction form
    20,910.68/28,857.34 = 11,835.34/x
  3. Step 3: Cross multiply
    20,910.68x = 28,857.34 × 11,835.34
  4. Step 4: Simplify right side
    20,910.68x = 341,536,430.40
  5. Step 5: Solve for x
    x = 341,536,430.40/20,910.68
  6. Step 6: Final answer
    x = 16,333.11

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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.