Home / 10,993.12-15,172.32-6,278.88

Finding the Fourth Proportional to 10,993.12, 15,172.32 and 6,278.88

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Solution

The fourth proportional to 10,993.12, 15,172.32 and 6,278.88 is: 8,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,993.12 : 15,172.32 = 6,278.88 : x
  2. Step 2: Convert to fraction form
    10,993.12/15,172.32 = 6,278.88/x
  3. Step 3: Cross multiply
    10,993.12x = 15,172.32 × 6,278.88
  4. Step 4: Simplify right side
    10,993.12x = 95,265,176.60
  5. Step 5: Solve for x
    x = 95,265,176.60/10,993.12
  6. Step 6: Final answer
    x = 8,665.89

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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.