Home / 18,960.90-28,445.31-7,274.04

Finding the Fourth Proportional to 18,960.90, 28,445.31 and 7,274.04

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Solution

The fourth proportional to 18,960.90, 28,445.31 and 7,274.04 is: 10,912.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.90 : 28,445.31 = 7,274.04 : x
  2. Step 2: Convert to fraction form
    18,960.90/28,445.31 = 7,274.04/x
  3. Step 3: Cross multiply
    18,960.90x = 28,445.31 × 7,274.04
  4. Step 4: Simplify right side
    18,960.90x = 206,912,322.75
  5. Step 5: Solve for x
    x = 206,912,322.75/18,960.90
  6. Step 6: Final answer
    x = 10,912.58

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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.