Home / 20,135.43-27,778.93-11,635.98

Finding the Fourth Proportional to 20,135.43, 27,778.93 and 11,635.98

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Solution

The fourth proportional to 20,135.43, 27,778.93 and 11,635.98 is: 16,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.43 : 27,778.93 = 11,635.98 : x
  2. Step 2: Convert to fraction form
    20,135.43/27,778.93 = 11,635.98/x
  3. Step 3: Cross multiply
    20,135.43x = 27,778.93 × 11,635.98
  4. Step 4: Simplify right side
    20,135.43x = 323,235,073.90
  5. Step 5: Solve for x
    x = 323,235,073.90/20,135.43
  6. Step 6: Final answer
    x = 16,053.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.