Home / 10,687.96-14,734.56-9,211.60

Finding the Fourth Proportional to 10,687.96, 14,734.56 and 9,211.60

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Solution

The fourth proportional to 10,687.96, 14,734.56 and 9,211.60 is: 12,699.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.96 : 14,734.56 = 9,211.60 : x
  2. Step 2: Convert to fraction form
    10,687.96/14,734.56 = 9,211.60/x
  3. Step 3: Cross multiply
    10,687.96x = 14,734.56 × 9,211.60
  4. Step 4: Simplify right side
    10,687.96x = 135,728,872.90
  5. Step 5: Solve for x
    x = 135,728,872.90/10,687.96
  6. Step 6: Final answer
    x = 12,699.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.