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Finding the Fourth Proportional to 15,100.09, 20,838.27 and 8,811.25

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Solution

The fourth proportional to 15,100.09, 20,838.27 and 8,811.25 is: 12,159.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.09 : 20,838.27 = 8,811.25 : x
  2. Step 2: Convert to fraction form
    15,100.09/20,838.27 = 8,811.25/x
  3. Step 3: Cross multiply
    15,100.09x = 20,838.27 × 8,811.25
  4. Step 4: Simplify right side
    15,100.09x = 183,611,206.54
  5. Step 5: Solve for x
    x = 183,611,206.54/15,100.09
  6. Step 6: Final answer
    x = 12,159.61

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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.