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Finding the Fourth Proportional to 13,403.70, 20,101.95 and 5,610.90

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Solution

The fourth proportional to 13,403.70, 20,101.95 and 5,610.90 is: 8,414.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.70 : 20,101.95 = 5,610.90 : x
  2. Step 2: Convert to fraction form
    13,403.70/20,101.95 = 5,610.90/x
  3. Step 3: Cross multiply
    13,403.70x = 20,101.95 × 5,610.90
  4. Step 4: Simplify right side
    13,403.70x = 112,790,031.26
  5. Step 5: Solve for x
    x = 112,790,031.26/13,403.70
  6. Step 6: Final answer
    x = 8,414.84

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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.