Home / 20,405.34-30,603.98-5,610.44

Finding the Fourth Proportional to 20,405.34, 30,603.98 and 5,610.44

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Solution

The fourth proportional to 20,405.34, 30,603.98 and 5,610.44 is: 8,414.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.34 : 30,603.98 = 5,610.44 : x
  2. Step 2: Convert to fraction form
    20,405.34/30,603.98 = 5,610.44/x
  3. Step 3: Cross multiply
    20,405.34x = 30,603.98 × 5,610.44
  4. Step 4: Simplify right side
    20,405.34x = 171,701,793.55
  5. Step 5: Solve for x
    x = 171,701,793.55/20,405.34
  6. Step 6: Final answer
    x = 8,414.55

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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.