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Finding the Fourth Proportional to 15,093.68, 20,829.02 and 8,379.18

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Solution

The fourth proportional to 15,093.68, 20,829.02 and 8,379.18 is: 11,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.68 : 20,829.02 = 8,379.18 : x
  2. Step 2: Convert to fraction form
    15,093.68/20,829.02 = 8,379.18/x
  3. Step 3: Cross multiply
    15,093.68x = 20,829.02 × 8,379.18
  4. Step 4: Simplify right side
    15,093.68x = 174,530,065.91
  5. Step 5: Solve for x
    x = 174,530,065.91/15,093.68
  6. Step 6: Final answer
    x = 11,563.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.