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Finding the Fourth Proportional to 15,560.96, 21,473.47 and 8,486.96

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Solution

The fourth proportional to 15,560.96, 21,473.47 and 8,486.96 is: 11,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,560.96 : 21,473.47 = 8,486.96 : x
  2. Step 2: Convert to fraction form
    15,560.96/21,473.47 = 8,486.96/x
  3. Step 3: Cross multiply
    15,560.96x = 21,473.47 × 8,486.96
  4. Step 4: Simplify right side
    15,560.96x = 182,244,352.37
  5. Step 5: Solve for x
    x = 182,244,352.37/15,560.96
  6. Step 6: Final answer
    x = 11,711.64

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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.