Home / 20,286.34-30,436.80-17,851.48

Finding the Fourth Proportional to 20,286.34, 30,436.80 and 17,851.48

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Solution

The fourth proportional to 20,286.34, 30,436.80 and 17,851.48 is: 26,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.34 : 30,436.80 = 17,851.48 : x
  2. Step 2: Convert to fraction form
    20,286.34/30,436.80 = 17,851.48/x
  3. Step 3: Cross multiply
    20,286.34x = 30,436.80 × 17,851.48
  4. Step 4: Simplify right side
    20,286.34x = 543,341,783.43
  5. Step 5: Solve for x
    x = 543,341,783.43/20,286.34
  6. Step 6: Final answer
    x = 26,783.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.