Home / 11,156.78-15,396.36-6,441.06

Finding the Fourth Proportional to 11,156.78, 15,396.36 and 6,441.06

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Solution

The fourth proportional to 11,156.78, 15,396.36 and 6,441.06 is: 8,888.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.78 : 15,396.36 = 6,441.06 : x
  2. Step 2: Convert to fraction form
    11,156.78/15,396.36 = 6,441.06/x
  3. Step 3: Cross multiply
    11,156.78x = 15,396.36 × 6,441.06
  4. Step 4: Simplify right side
    11,156.78x = 99,168,878.54
  5. Step 5: Solve for x
    x = 99,168,878.54/11,156.78
  6. Step 6: Final answer
    x = 8,888.66

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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.