Home / 13,442.12-20,165.32-3,582.20

Finding the Fourth Proportional to 13,442.12, 20,165.32 and 3,582.20

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Solution

The fourth proportional to 13,442.12, 20,165.32 and 3,582.20 is: 5,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.12 : 20,165.32 = 3,582.20 : x
  2. Step 2: Convert to fraction form
    13,442.12/20,165.32 = 3,582.20/x
  3. Step 3: Cross multiply
    13,442.12x = 20,165.32 × 3,582.20
  4. Step 4: Simplify right side
    13,442.12x = 72,236,209.30
  5. Step 5: Solve for x
    x = 72,236,209.30/13,442.12
  6. Step 6: Final answer
    x = 5,373.87

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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.