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Finding the Fourth Proportional to 10,858.46, 16,287.68 and 6,987.47

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Solution

The fourth proportional to 10,858.46, 16,287.68 and 6,987.47 is: 10,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.46 : 16,287.68 = 6,987.47 : x
  2. Step 2: Convert to fraction form
    10,858.46/16,287.68 = 6,987.47/x
  3. Step 3: Cross multiply
    10,858.46x = 16,287.68 × 6,987.47
  4. Step 4: Simplify right side
    10,858.46x = 113,809,611.40
  5. Step 5: Solve for x
    x = 113,809,611.40/10,858.46
  6. Step 6: Final answer
    x = 10,481.20

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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.