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Finding the Fourth Proportional to 18,808.86, 28,215.72 and 6,323.52

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Solution

The fourth proportional to 18,808.86, 28,215.72 and 6,323.52 is: 9,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.86 : 28,215.72 = 6,323.52 : x
  2. Step 2: Convert to fraction form
    18,808.86/28,215.72 = 6,323.52/x
  3. Step 3: Cross multiply
    18,808.86x = 28,215.72 × 6,323.52
  4. Step 4: Simplify right side
    18,808.86x = 178,422,669.73
  5. Step 5: Solve for x
    x = 178,422,669.73/18,808.86
  6. Step 6: Final answer
    x = 9,486.10

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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.