Home / 10,990.98-15,170.28-6,278.01

Finding the Fourth Proportional to 10,990.98, 15,170.28 and 6,278.01

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Solution

The fourth proportional to 10,990.98, 15,170.28 and 6,278.01 is: 8,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.98 : 15,170.28 = 6,278.01 : x
  2. Step 2: Convert to fraction form
    10,990.98/15,170.28 = 6,278.01/x
  3. Step 3: Cross multiply
    10,990.98x = 15,170.28 × 6,278.01
  4. Step 4: Simplify right side
    10,990.98x = 95,239,169.54
  5. Step 5: Solve for x
    x = 95,239,169.54/10,990.98
  6. Step 6: Final answer
    x = 8,665.21

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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.