Home / 13,427.64-20,141.40-5,105.70

Finding the Fourth Proportional to 13,427.64, 20,141.40 and 5,105.70

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Solution

The fourth proportional to 13,427.64, 20,141.40 and 5,105.70 is: 7,658.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.64 : 20,141.40 = 5,105.70 : x
  2. Step 2: Convert to fraction form
    13,427.64/20,141.40 = 5,105.70/x
  3. Step 3: Cross multiply
    13,427.64x = 20,141.40 × 5,105.70
  4. Step 4: Simplify right side
    13,427.64x = 102,835,945.98
  5. Step 5: Solve for x
    x = 102,835,945.98/13,427.64
  6. Step 6: Final answer
    x = 7,658.53

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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.