Home / 13,830.12-20,742.12-5,508.60

Finding the Fourth Proportional to 13,830.12, 20,742.12 and 5,508.60

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Solution

The fourth proportional to 13,830.12, 20,742.12 and 5,508.60 is: 8,261.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.12 : 20,742.12 = 5,508.60 : x
  2. Step 2: Convert to fraction form
    13,830.12/20,742.12 = 5,508.60/x
  3. Step 3: Cross multiply
    13,830.12x = 20,742.12 × 5,508.60
  4. Step 4: Simplify right side
    13,830.12x = 114,260,042.23
  5. Step 5: Solve for x
    x = 114,260,042.23/13,830.12
  6. Step 6: Final answer
    x = 8,261.68

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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.