Home / 20,767.20-28,657.74-11,813.87

Finding the Fourth Proportional to 20,767.20, 28,657.74 and 11,813.87

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Solution

The fourth proportional to 20,767.20, 28,657.74 and 11,813.87 is: 16,302.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.20 : 28,657.74 = 11,813.87 : x
  2. Step 2: Convert to fraction form
    20,767.20/28,657.74 = 11,813.87/x
  3. Step 3: Cross multiply
    20,767.20x = 28,657.74 × 11,813.87
  4. Step 4: Simplify right side
    20,767.20x = 338,558,612.50
  5. Step 5: Solve for x
    x = 338,558,612.50/20,767.20
  6. Step 6: Final answer
    x = 16,302.56

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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.