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Finding the Fourth Proportional to 15,551.58, 21,461.11 and 8,836.88

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Solution

The fourth proportional to 15,551.58, 21,461.11 and 8,836.88 is: 12,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.58 : 21,461.11 = 8,836.88 : x
  2. Step 2: Convert to fraction form
    15,551.58/21,461.11 = 8,836.88/x
  3. Step 3: Cross multiply
    15,551.58x = 21,461.11 × 8,836.88
  4. Step 4: Simplify right side
    15,551.58x = 189,649,253.74
  5. Step 5: Solve for x
    x = 189,649,253.74/15,551.58
  6. Step 6: Final answer
    x = 12,194.85

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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.