Home / 21,766.60-30,025.18-13,687.46

Finding the Fourth Proportional to 21,766.60, 30,025.18 and 13,687.46

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Solution

The fourth proportional to 21,766.60, 30,025.18 and 13,687.46 is: 18,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.60 : 30,025.18 = 13,687.46 : x
  2. Step 2: Convert to fraction form
    21,766.60/30,025.18 = 13,687.46/x
  3. Step 3: Cross multiply
    21,766.60x = 30,025.18 × 13,687.46
  4. Step 4: Simplify right side
    21,766.60x = 410,968,540.97
  5. Step 5: Solve for x
    x = 410,968,540.97/21,766.60
  6. Step 6: Final answer
    x = 18,880.70

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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.