Home / 13,433.40-20,135.70-5,110.20

Finding the Fourth Proportional to 13,433.40, 20,135.70 and 5,110.20

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Solution

The fourth proportional to 13,433.40, 20,135.70 and 5,110.20 is: 7,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.40 : 20,135.70 = 5,110.20 : x
  2. Step 2: Convert to fraction form
    13,433.40/20,135.70 = 5,110.20/x
  3. Step 3: Cross multiply
    13,433.40x = 20,135.70 × 5,110.20
  4. Step 4: Simplify right side
    13,433.40x = 102,897,454.14
  5. Step 5: Solve for x
    x = 102,897,454.14/13,433.40
  6. Step 6: Final answer
    x = 7,659.82

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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.