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Finding the Fourth Proportional to 15,841.41, 21,859.79 and 8,766.06

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Solution

The fourth proportional to 15,841.41, 21,859.79 and 8,766.06 is: 12,096.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.41 : 21,859.79 = 8,766.06 : x
  2. Step 2: Convert to fraction form
    15,841.41/21,859.79 = 8,766.06/x
  3. Step 3: Cross multiply
    15,841.41x = 21,859.79 × 8,766.06
  4. Step 4: Simplify right side
    15,841.41x = 191,624,186.90
  5. Step 5: Solve for x
    x = 191,624,186.90/15,841.41
  6. Step 6: Final answer
    x = 12,096.41

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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.