Home / 11,156.84-15,396.72-6,121.28

Finding the Fourth Proportional to 11,156.84, 15,396.72 and 6,121.28

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Solution

The fourth proportional to 11,156.84, 15,396.72 and 6,121.28 is: 8,447.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.84 : 15,396.72 = 6,121.28 : x
  2. Step 2: Convert to fraction form
    11,156.84/15,396.72 = 6,121.28/x
  3. Step 3: Cross multiply
    11,156.84x = 15,396.72 × 6,121.28
  4. Step 4: Simplify right side
    11,156.84x = 94,247,634.20
  5. Step 5: Solve for x
    x = 94,247,634.20/11,156.84
  6. Step 6: Final answer
    x = 8,447.52

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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.