Home / 13,422.60-20,140.34-5,530.86

Finding the Fourth Proportional to 13,422.60, 20,140.34 and 5,530.86

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Solution

The fourth proportional to 13,422.60, 20,140.34 and 5,530.86 is: 8,298.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.60 : 20,140.34 = 5,530.86 : x
  2. Step 2: Convert to fraction form
    13,422.60/20,140.34 = 5,530.86/x
  3. Step 3: Cross multiply
    13,422.60x = 20,140.34 × 5,530.86
  4. Step 4: Simplify right side
    13,422.60x = 111,393,373.24
  5. Step 5: Solve for x
    x = 111,393,373.24/13,422.60
  6. Step 6: Final answer
    x = 8,298.94

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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.