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Finding the Fourth Proportional to 10,860.54, 16,318.09 and 6,913.55

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Solution

The fourth proportional to 10,860.54, 16,318.09 and 6,913.55 is: 10,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.54 : 16,318.09 = 6,913.55 : x
  2. Step 2: Convert to fraction form
    10,860.54/16,318.09 = 6,913.55/x
  3. Step 3: Cross multiply
    10,860.54x = 16,318.09 × 6,913.55
  4. Step 4: Simplify right side
    10,860.54x = 112,815,858.17
  5. Step 5: Solve for x
    x = 112,815,858.17/10,860.54
  6. Step 6: Final answer
    x = 10,387.68

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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.