Home / 13,778.05-20,669.64-6,377.62

Finding the Fourth Proportional to 13,778.05, 20,669.64 and 6,377.62

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Solution

The fourth proportional to 13,778.05, 20,669.64 and 6,377.62 is: 9,567.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.05 : 20,669.64 = 6,377.62 : x
  2. Step 2: Convert to fraction form
    13,778.05/20,669.64 = 6,377.62/x
  3. Step 3: Cross multiply
    13,778.05x = 20,669.64 × 6,377.62
  4. Step 4: Simplify right side
    13,778.05x = 131,823,109.46
  5. Step 5: Solve for x
    x = 131,823,109.46/13,778.05
  6. Step 6: Final answer
    x = 9,567.62

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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.