Home / 13,666.92-20,500.38-9,778.92

Finding the Fourth Proportional to 13,666.92, 20,500.38 and 9,778.92

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Solution

The fourth proportional to 13,666.92, 20,500.38 and 9,778.92 is: 14,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.92 : 20,500.38 = 9,778.92 : x
  2. Step 2: Convert to fraction form
    13,666.92/20,500.38 = 9,778.92/x
  3. Step 3: Cross multiply
    13,666.92x = 20,500.38 × 9,778.92
  4. Step 4: Simplify right side
    13,666.92x = 200,471,575.99
  5. Step 5: Solve for x
    x = 200,471,575.99/13,666.92
  6. Step 6: Final answer
    x = 14,668.38

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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.