Home / 19,940.28-27,508.32-12,766.80

Finding the Fourth Proportional to 19,940.28, 27,508.32 and 12,766.80

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Solution

The fourth proportional to 19,940.28, 27,508.32 and 12,766.80 is: 17,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.28 : 27,508.32 = 12,766.80 : x
  2. Step 2: Convert to fraction form
    19,940.28/27,508.32 = 12,766.80/x
  3. Step 3: Cross multiply
    19,940.28x = 27,508.32 × 12,766.80
  4. Step 4: Simplify right side
    19,940.28x = 351,193,219.78
  5. Step 5: Solve for x
    x = 351,193,219.78/19,940.28
  6. Step 6: Final answer
    x = 17,612.25

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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.