Home / 10,664.20-15,996.30-9,886.60

Finding the Fourth Proportional to 10,664.20, 15,996.30 and 9,886.60

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Solution

The fourth proportional to 10,664.20, 15,996.30 and 9,886.60 is: 14,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,664.20 : 15,996.30 = 9,886.60 : x
  2. Step 2: Convert to fraction form
    10,664.20/15,996.30 = 9,886.60/x
  3. Step 3: Cross multiply
    10,664.20x = 15,996.30 × 9,886.60
  4. Step 4: Simplify right side
    10,664.20x = 158,149,019.58
  5. Step 5: Solve for x
    x = 158,149,019.58/10,664.20
  6. Step 6: Final answer
    x = 14,829.90

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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.