Home / 13,401.50-20,099.51-5,078.65

Finding the Fourth Proportional to 13,401.50, 20,099.51 and 5,078.65

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Solution

The fourth proportional to 13,401.50, 20,099.51 and 5,078.65 is: 7,616.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.50 : 20,099.51 = 5,078.65 : x
  2. Step 2: Convert to fraction form
    13,401.50/20,099.51 = 5,078.65/x
  3. Step 3: Cross multiply
    13,401.50x = 20,099.51 × 5,078.65
  4. Step 4: Simplify right side
    13,401.50x = 102,078,338.91
  5. Step 5: Solve for x
    x = 102,078,338.91/13,401.50
  6. Step 6: Final answer
    x = 7,616.94

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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.