Home / 18,770.90-28,159.23-5,621.78

Finding the Fourth Proportional to 18,770.90, 28,159.23 and 5,621.78

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Solution

The fourth proportional to 18,770.90, 28,159.23 and 5,621.78 is: 8,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.90 : 28,159.23 = 5,621.78 : x
  2. Step 2: Convert to fraction form
    18,770.90/28,159.23 = 5,621.78/x
  3. Step 3: Cross multiply
    18,770.90x = 28,159.23 × 5,621.78
  4. Step 4: Simplify right side
    18,770.90x = 158,304,996.03
  5. Step 5: Solve for x
    x = 158,304,996.03/18,770.90
  6. Step 6: Final answer
    x = 8,433.53

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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.