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Finding the Fourth Proportional to 18,873.33, 28,317.75 and 8,337.78

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Solution

The fourth proportional to 18,873.33, 28,317.75 and 8,337.78 is: 12,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.33 : 28,317.75 = 8,337.78 : x
  2. Step 2: Convert to fraction form
    18,873.33/28,317.75 = 8,337.78/x
  3. Step 3: Cross multiply
    18,873.33x = 28,317.75 × 8,337.78
  4. Step 4: Simplify right side
    18,873.33x = 236,107,169.60
  5. Step 5: Solve for x
    x = 236,107,169.60/18,873.33
  6. Step 6: Final answer
    x = 12,510.10

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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.