Home / 11,147.87-15,380.24-6,609.62

Finding the Fourth Proportional to 11,147.87, 15,380.24 and 6,609.62

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Solution

The fourth proportional to 11,147.87, 15,380.24 and 6,609.62 is: 9,119.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.87 : 15,380.24 = 6,609.62 : x
  2. Step 2: Convert to fraction form
    11,147.87/15,380.24 = 6,609.62/x
  3. Step 3: Cross multiply
    11,147.87x = 15,380.24 × 6,609.62
  4. Step 4: Simplify right side
    11,147.87x = 101,657,547.31
  5. Step 5: Solve for x
    x = 101,657,547.31/11,147.87
  6. Step 6: Final answer
    x = 9,119.01

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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.