Home / 10,789.78-16,186.67-4,215.57

Finding the Fourth Proportional to 10,789.78, 16,186.67 and 4,215.57

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Solution

The fourth proportional to 10,789.78, 16,186.67 and 4,215.57 is: 6,324.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,789.78 : 16,186.67 = 4,215.57 : x
  2. Step 2: Convert to fraction form
    10,789.78/16,186.67 = 4,215.57/x
  3. Step 3: Cross multiply
    10,789.78x = 16,186.67 × 4,215.57
  4. Step 4: Simplify right side
    10,789.78x = 68,236,040.45
  5. Step 5: Solve for x
    x = 68,236,040.45/10,789.78
  6. Step 6: Final answer
    x = 6,324.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.