Home / 18,720.24-28,072.35-6,236.88

Finding the Fourth Proportional to 18,720.24, 28,072.35 and 6,236.88

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Solution

The fourth proportional to 18,720.24, 28,072.35 and 6,236.88 is: 9,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.24 : 28,072.35 = 6,236.88 : x
  2. Step 2: Convert to fraction form
    18,720.24/28,072.35 = 6,236.88/x
  3. Step 3: Cross multiply
    18,720.24x = 28,072.35 × 6,236.88
  4. Step 4: Simplify right side
    18,720.24x = 175,083,878.27
  5. Step 5: Solve for x
    x = 175,083,878.27/18,720.24
  6. Step 6: Final answer
    x = 9,352.65

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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.