Home / 11,154.78-15,393.51-6,441.66

Finding the Fourth Proportional to 11,154.78, 15,393.51 and 6,441.66

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Solution

The fourth proportional to 11,154.78, 15,393.51 and 6,441.66 is: 8,889.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.78 : 15,393.51 = 6,441.66 : x
  2. Step 2: Convert to fraction form
    11,154.78/15,393.51 = 6,441.66/x
  3. Step 3: Cross multiply
    11,154.78x = 15,393.51 × 6,441.66
  4. Step 4: Simplify right side
    11,154.78x = 99,159,757.63
  5. Step 5: Solve for x
    x = 99,159,757.63/11,154.78
  6. Step 6: Final answer
    x = 8,889.44

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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.