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Finding the Fourth Proportional to 10,611, 15,922.98 and 4,455

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Solution

The fourth proportional to 10,611, 15,922.98 and 4,455 is: 6,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611 : 15,922.98 = 4,455 : x
  2. Step 2: Convert to fraction form
    10,611/15,922.98 = 4,455/x
  3. Step 3: Cross multiply
    10,611x = 15,922.98 × 4,455
  4. Step 4: Simplify right side
    10,611x = 70,936,875.90
  5. Step 5: Solve for x
    x = 70,936,875.90/10,611
  6. Step 6: Final answer
    x = 6,685.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.