Home / 20,298.20-30,452.10-6,447.20

Finding the Fourth Proportional to 20,298.20, 30,452.10 and 6,447.20

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Solution

The fourth proportional to 20,298.20, 30,452.10 and 6,447.20 is: 9,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.20 : 30,452.10 = 6,447.20 : x
  2. Step 2: Convert to fraction form
    20,298.20/30,452.10 = 6,447.20/x
  3. Step 3: Cross multiply
    20,298.20x = 30,452.10 × 6,447.20
  4. Step 4: Simplify right side
    20,298.20x = 196,330,779.12
  5. Step 5: Solve for x
    x = 196,330,779.12/20,298.20
  6. Step 6: Final answer
    x = 9,672.32

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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.