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Finding the Fourth Proportional to 18,710.96, 28,053.48 and 8,317.04

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Solution

The fourth proportional to 18,710.96, 28,053.48 and 8,317.04 is: 12,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.96 : 28,053.48 = 8,317.04 : x
  2. Step 2: Convert to fraction form
    18,710.96/28,053.48 = 8,317.04/x
  3. Step 3: Cross multiply
    18,710.96x = 28,053.48 × 8,317.04
  4. Step 4: Simplify right side
    18,710.96x = 233,321,915.30
  5. Step 5: Solve for x
    x = 233,321,915.30/18,710.96
  6. Step 6: Final answer
    x = 12,469.80

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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.