Home / 13,433.60-20,150.40-5,111.68

Finding the Fourth Proportional to 13,433.60, 20,150.40 and 5,111.68

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Solution

The fourth proportional to 13,433.60, 20,150.40 and 5,111.68 is: 7,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.60 : 20,150.40 = 5,111.68 : x
  2. Step 2: Convert to fraction form
    13,433.60/20,150.40 = 5,111.68/x
  3. Step 3: Cross multiply
    13,433.60x = 20,150.40 × 5,111.68
  4. Step 4: Simplify right side
    13,433.60x = 103,002,396.67
  5. Step 5: Solve for x
    x = 103,002,396.67/13,433.60
  6. Step 6: Final answer
    x = 7,667.52

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Double scale
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Similar ratio
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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.