Home / 15,742.96-21,725.44-8,669.60

Finding the Fourth Proportional to 15,742.96, 21,725.44 and 8,669.60

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Solution

The fourth proportional to 15,742.96, 21,725.44 and 8,669.60 is: 11,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.96 : 21,725.44 = 8,669.60 : x
  2. Step 2: Convert to fraction form
    15,742.96/21,725.44 = 8,669.60/x
  3. Step 3: Cross multiply
    15,742.96x = 21,725.44 × 8,669.60
  4. Step 4: Simplify right side
    15,742.96x = 188,350,874.62
  5. Step 5: Solve for x
    x = 188,350,874.62/15,742.96
  6. Step 6: Final answer
    x = 11,964.13

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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.