Home / 20,511.24-30,766.85-4,928.86

Finding the Fourth Proportional to 20,511.24, 30,766.85 and 4,928.86

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Solution

The fourth proportional to 20,511.24, 30,766.85 and 4,928.86 is: 7,393.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.24 : 30,766.85 = 4,928.86 : x
  2. Step 2: Convert to fraction form
    20,511.24/30,766.85 = 4,928.86/x
  3. Step 3: Cross multiply
    20,511.24x = 30,766.85 × 4,928.86
  4. Step 4: Simplify right side
    20,511.24x = 151,645,513.89
  5. Step 5: Solve for x
    x = 151,645,513.89/20,511.24
  6. Step 6: Final answer
    x = 7,393.29

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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.