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Finding the Fourth Proportional to 10,611.93, 15,921.07 and 4,283.55

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Solution

The fourth proportional to 10,611.93, 15,921.07 and 4,283.55 is: 6,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.93 : 15,921.07 = 4,283.55 : x
  2. Step 2: Convert to fraction form
    10,611.93/15,921.07 = 4,283.55/x
  3. Step 3: Cross multiply
    10,611.93x = 15,921.07 × 4,283.55
  4. Step 4: Simplify right side
    10,611.93x = 68,198,699.40
  5. Step 5: Solve for x
    x = 68,198,699.40/10,611.93
  6. Step 6: Final answer
    x = 6,426.61

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1.5x scale

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.