Home / 13,394.20-20,090.58-6,447.64

Finding the Fourth Proportional to 13,394.20, 20,090.58 and 6,447.64

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Solution

The fourth proportional to 13,394.20, 20,090.58 and 6,447.64 is: 9,671.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.20 : 20,090.58 = 6,447.64 : x
  2. Step 2: Convert to fraction form
    13,394.20/20,090.58 = 6,447.64/x
  3. Step 3: Cross multiply
    13,394.20x = 20,090.58 × 6,447.64
  4. Step 4: Simplify right side
    13,394.20x = 129,536,827.23
  5. Step 5: Solve for x
    x = 129,536,827.23/13,394.20
  6. Step 6: Final answer
    x = 9,671.11

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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.