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Finding the Fourth Proportional to 18,819.24, 28,228.86 and 6,508.20

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Solution

The fourth proportional to 18,819.24, 28,228.86 and 6,508.20 is: 9,762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.24 : 28,228.86 = 6,508.20 : x
  2. Step 2: Convert to fraction form
    18,819.24/28,228.86 = 6,508.20/x
  3. Step 3: Cross multiply
    18,819.24x = 28,228.86 × 6,508.20
  4. Step 4: Simplify right side
    18,819.24x = 183,719,066.65
  5. Step 5: Solve for x
    x = 183,719,066.65/18,819.24
  6. Step 6: Final answer
    x = 9,762.30

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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.