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Finding the Fourth Proportional to 15,100.02, 20,836.98 and 8,385.48

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Solution

The fourth proportional to 15,100.02, 20,836.98 and 8,385.48 is: 11,571.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.02 : 20,836.98 = 8,385.48 : x
  2. Step 2: Convert to fraction form
    15,100.02/20,836.98 = 8,385.48/x
  3. Step 3: Cross multiply
    15,100.02x = 20,836.98 × 8,385.48
  4. Step 4: Simplify right side
    15,100.02x = 174,728,079.05
  5. Step 5: Solve for x
    x = 174,728,079.05/15,100.02
  6. Step 6: Final answer
    x = 11,571.38

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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.