Home / 20,608.83-28,439.20-11,657.62

Finding the Fourth Proportional to 20,608.83, 28,439.20 and 11,657.62

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Solution

The fourth proportional to 20,608.83, 28,439.20 and 11,657.62 is: 16,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.83 : 28,439.20 = 11,657.62 : x
  2. Step 2: Convert to fraction form
    20,608.83/28,439.20 = 11,657.62/x
  3. Step 3: Cross multiply
    20,608.83x = 28,439.20 × 11,657.62
  4. Step 4: Simplify right side
    20,608.83x = 331,533,436.83
  5. Step 5: Solve for x
    x = 331,533,436.83/20,608.83
  6. Step 6: Final answer
    x = 16,086.96

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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.