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Finding the Fourth Proportional to 15,203.27, 20,979.52 and 8,489.52

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Solution

The fourth proportional to 15,203.27, 20,979.52 and 8,489.52 is: 11,714.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,203.27 : 20,979.52 = 8,489.52 : x
  2. Step 2: Convert to fraction form
    15,203.27/20,979.52 = 8,489.52/x
  3. Step 3: Cross multiply
    15,203.27x = 20,979.52 × 8,489.52
  4. Step 4: Simplify right side
    15,203.27x = 178,106,033.41
  5. Step 5: Solve for x
    x = 178,106,033.41/15,203.27
  6. Step 6: Final answer
    x = 11,714.98

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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.