Home / 13,420.56-20,125.20-5,095.98

Finding the Fourth Proportional to 13,420.56, 20,125.20 and 5,095.98

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Solution

The fourth proportional to 13,420.56, 20,125.20 and 5,095.98 is: 7,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.56 : 20,125.20 = 5,095.98 : x
  2. Step 2: Convert to fraction form
    13,420.56/20,125.20 = 5,095.98/x
  3. Step 3: Cross multiply
    13,420.56x = 20,125.20 × 5,095.98
  4. Step 4: Simplify right side
    13,420.56x = 102,557,616.70
  5. Step 5: Solve for x
    x = 102,557,616.70/13,420.56
  6. Step 6: Final answer
    x = 7,641.83

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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.