Home / 20,766.93-28,657.37-11,813.60

Finding the Fourth Proportional to 20,766.93, 28,657.37 and 11,813.60

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Solution

The fourth proportional to 20,766.93, 28,657.37 and 11,813.60 is: 16,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.93 : 28,657.37 = 11,813.60 : x
  2. Step 2: Convert to fraction form
    20,766.93/28,657.37 = 11,813.60/x
  3. Step 3: Cross multiply
    20,766.93x = 28,657.37 × 11,813.60
  4. Step 4: Simplify right side
    20,766.93x = 338,546,612.99
  5. Step 5: Solve for x
    x = 338,546,612.99/20,766.93
  6. Step 6: Final answer
    x = 16,302.20

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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.