Home / 20,292.21-30,439.40-6,442.29

Finding the Fourth Proportional to 20,292.21, 30,439.40 and 6,442.29

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Solution

The fourth proportional to 20,292.21, 30,439.40 and 6,442.29 is: 9,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.21 : 30,439.40 = 6,442.29 : x
  2. Step 2: Convert to fraction form
    20,292.21/30,439.40 = 6,442.29/x
  3. Step 3: Cross multiply
    20,292.21x = 30,439.40 × 6,442.29
  4. Step 4: Simplify right side
    20,292.21x = 196,099,410.01
  5. Step 5: Solve for x
    x = 196,099,410.01/20,292.21
  6. Step 6: Final answer
    x = 9,663.78

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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.