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Finding the Fourth Proportional to 15,208.38, 20,986.08 and 8,833.32

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Solution

The fourth proportional to 15,208.38, 20,986.08 and 8,833.32 is: 12,189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.38 : 20,986.08 = 8,833.32 : x
  2. Step 2: Convert to fraction form
    15,208.38/20,986.08 = 8,833.32/x
  3. Step 3: Cross multiply
    15,208.38x = 20,986.08 × 8,833.32
  4. Step 4: Simplify right side
    15,208.38x = 185,376,760.19
  5. Step 5: Solve for x
    x = 185,376,760.19/15,208.38
  6. Step 6: Final answer
    x = 12,189.12

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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.