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Finding the Fourth Proportional to 15,200.55, 20,976.62 and 8,486.46

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Solution

The fourth proportional to 15,200.55, 20,976.62 and 8,486.46 is: 11,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.55 : 20,976.62 = 8,486.46 : x
  2. Step 2: Convert to fraction form
    15,200.55/20,976.62 = 8,486.46/x
  3. Step 3: Cross multiply
    15,200.55x = 20,976.62 × 8,486.46
  4. Step 4: Simplify right side
    15,200.55x = 178,017,204.13
  5. Step 5: Solve for x
    x = 178,017,204.13/15,200.55
  6. Step 6: Final answer
    x = 11,711.23

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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.