Home / 13,460.80-20,199.60-5,141.56

Finding the Fourth Proportional to 13,460.80, 20,199.60 and 5,141.56

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Solution

The fourth proportional to 13,460.80, 20,199.60 and 5,141.56 is: 7,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.80 : 20,199.60 = 5,141.56 : x
  2. Step 2: Convert to fraction form
    13,460.80/20,199.60 = 5,141.56/x
  3. Step 3: Cross multiply
    13,460.80x = 20,199.60 × 5,141.56
  4. Step 4: Simplify right side
    13,460.80x = 103,857,455.38
  5. Step 5: Solve for x
    x = 103,857,455.38/13,460.80
  6. Step 6: Final answer
    x = 7,715.55

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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.