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Finding the Fourth Proportional to 15,676.44, 21,633 and 8,602.68

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Solution

The fourth proportional to 15,676.44, 21,633 and 8,602.68 is: 11,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.44 : 21,633 = 8,602.68 : x
  2. Step 2: Convert to fraction form
    15,676.44/21,633 = 8,602.68/x
  3. Step 3: Cross multiply
    15,676.44x = 21,633 × 8,602.68
  4. Step 4: Simplify right side
    15,676.44x = 186,101,776.44
  5. Step 5: Solve for x
    x = 186,101,776.44/15,676.44
  6. Step 6: Final answer
    x = 11,871.43

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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.