Home / 15,276.14-21,079.98-8,469.65

Finding the Fourth Proportional to 15,276.14, 21,079.98 and 8,469.65

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Solution

The fourth proportional to 15,276.14, 21,079.98 and 8,469.65 is: 11,687.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.14 : 21,079.98 = 8,469.65 : x
  2. Step 2: Convert to fraction form
    15,276.14/21,079.98 = 8,469.65/x
  3. Step 3: Cross multiply
    15,276.14x = 21,079.98 × 8,469.65
  4. Step 4: Simplify right side
    15,276.14x = 178,540,105.31
  5. Step 5: Solve for x
    x = 178,540,105.31/15,276.14
  6. Step 6: Final answer
    x = 11,687.52

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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.