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Finding the Fourth Proportional to 15,654.82, 21,602.84 and 8,579.88

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Solution

The fourth proportional to 15,654.82, 21,602.84 and 8,579.88 is: 11,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.82 : 21,602.84 = 8,579.88 : x
  2. Step 2: Convert to fraction form
    15,654.82/21,602.84 = 8,579.88/x
  3. Step 3: Cross multiply
    15,654.82x = 21,602.84 × 8,579.88
  4. Step 4: Simplify right side
    15,654.82x = 185,349,774.86
  5. Step 5: Solve for x
    x = 185,349,774.86/15,654.82
  6. Step 6: Final answer
    x = 11,839.79

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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.