Home / 15,561.32-21,474.62-8,487.78

Finding the Fourth Proportional to 15,561.32, 21,474.62 and 8,487.78

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Solution

The fourth proportional to 15,561.32, 21,474.62 and 8,487.78 is: 11,713.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.32 : 21,474.62 = 8,487.78 : x
  2. Step 2: Convert to fraction form
    15,561.32/21,474.62 = 8,487.78/x
  3. Step 3: Cross multiply
    15,561.32x = 21,474.62 × 8,487.78
  4. Step 4: Simplify right side
    15,561.32x = 182,271,850.14
  5. Step 5: Solve for x
    x = 182,271,850.14/15,561.32
  6. Step 6: Final answer
    x = 11,713.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.