Home / 18,788.08-28,182.12-4,748.15

Finding the Fourth Proportional to 18,788.08, 28,182.12 and 4,748.15

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Solution

The fourth proportional to 18,788.08, 28,182.12 and 4,748.15 is: 7,122.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.08 : 28,182.12 = 4,748.15 : x
  2. Step 2: Convert to fraction form
    18,788.08/28,182.12 = 4,748.15/x
  3. Step 3: Cross multiply
    18,788.08x = 28,182.12 × 4,748.15
  4. Step 4: Simplify right side
    18,788.08x = 133,812,768.43
  5. Step 5: Solve for x
    x = 133,812,768.43/18,788.08
  6. Step 6: Final answer
    x = 7,122.22

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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.