Home / 13,433.64-20,146.40-5,640.72

Finding the Fourth Proportional to 13,433.64, 20,146.40 and 5,640.72

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Solution

The fourth proportional to 13,433.64, 20,146.40 and 5,640.72 is: 8,459.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.64 : 20,146.40 = 5,640.72 : x
  2. Step 2: Convert to fraction form
    13,433.64/20,146.40 = 5,640.72/x
  3. Step 3: Cross multiply
    13,433.64x = 20,146.40 × 5,640.72
  4. Step 4: Simplify right side
    13,433.64x = 113,640,201.41
  5. Step 5: Solve for x
    x = 113,640,201.41/13,433.64
  6. Step 6: Final answer
    x = 8,459.38

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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.