Home / 20,269.92-30,405.24-10,917.60

Finding the Fourth Proportional to 20,269.92, 30,405.24 and 10,917.60

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Solution

The fourth proportional to 20,269.92, 30,405.24 and 10,917.60 is: 16,376.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.92 : 30,405.24 = 10,917.60 : x
  2. Step 2: Convert to fraction form
    20,269.92/30,405.24 = 10,917.60/x
  3. Step 3: Cross multiply
    20,269.92x = 30,405.24 × 10,917.60
  4. Step 4: Simplify right side
    20,269.92x = 331,952,248.22
  5. Step 5: Solve for x
    x = 331,952,248.22/20,269.92
  6. Step 6: Final answer
    x = 16,376.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.