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Finding the Fourth Proportional to 15,676.46, 21,633.89 and 8,602.88

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Solution

The fourth proportional to 15,676.46, 21,633.89 and 8,602.88 is: 11,872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.46 : 21,633.89 = 8,602.88 : x
  2. Step 2: Convert to fraction form
    15,676.46/21,633.89 = 8,602.88/x
  3. Step 3: Cross multiply
    15,676.46x = 21,633.89 × 8,602.88
  4. Step 4: Simplify right side
    15,676.46x = 186,113,608.42
  5. Step 5: Solve for x
    x = 186,113,608.42/15,676.46
  6. Step 6: Final answer
    x = 11,872.17

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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.