Home / 18,922.68-28,388.52-5,774.22

Finding the Fourth Proportional to 18,922.68, 28,388.52 and 5,774.22

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Solution

The fourth proportional to 18,922.68, 28,388.52 and 5,774.22 is: 8,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.68 : 28,388.52 = 5,774.22 : x
  2. Step 2: Convert to fraction form
    18,922.68/28,388.52 = 5,774.22/x
  3. Step 3: Cross multiply
    18,922.68x = 28,388.52 × 5,774.22
  4. Step 4: Simplify right side
    18,922.68x = 163,921,559.95
  5. Step 5: Solve for x
    x = 163,921,559.95/18,922.68
  6. Step 6: Final answer
    x = 8,662.70

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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.