Home / 18,912.68-28,370.28-5,765.24

Finding the Fourth Proportional to 18,912.68, 28,370.28 and 5,765.24

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Solution

The fourth proportional to 18,912.68, 28,370.28 and 5,765.24 is: 8,648.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.68 : 28,370.28 = 5,765.24 : x
  2. Step 2: Convert to fraction form
    18,912.68/28,370.28 = 5,765.24/x
  3. Step 3: Cross multiply
    18,912.68x = 28,370.28 × 5,765.24
  4. Step 4: Simplify right side
    18,912.68x = 163,561,473.07
  5. Step 5: Solve for x
    x = 163,561,473.07/18,912.68
  6. Step 6: Final answer
    x = 8,648.24

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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.