Home / 20,834.20-28,750.98-11,881.47

Finding the Fourth Proportional to 20,834.20, 28,750.98 and 11,881.47

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Solution

The fourth proportional to 20,834.20, 28,750.98 and 11,881.47 is: 16,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.20 : 28,750.98 = 11,881.47 : x
  2. Step 2: Convert to fraction form
    20,834.20/28,750.98 = 11,881.47/x
  3. Step 3: Cross multiply
    20,834.20x = 28,750.98 × 11,881.47
  4. Step 4: Simplify right side
    20,834.20x = 341,603,906.34
  5. Step 5: Solve for x
    x = 341,603,906.34/20,834.20
  6. Step 6: Final answer
    x = 16,396.31

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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.