Home / 10,120.89-13,961.52-8,234.58

Finding the Fourth Proportional to 10,120.89, 13,961.52 and 8,234.58

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Solution

The fourth proportional to 10,120.89, 13,961.52 and 8,234.58 is: 11,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.89 : 13,961.52 = 8,234.58 : x
  2. Step 2: Convert to fraction form
    10,120.89/13,961.52 = 8,234.58/x
  3. Step 3: Cross multiply
    10,120.89x = 13,961.52 × 8,234.58
  4. Step 4: Simplify right side
    10,120.89x = 114,967,253.36
  5. Step 5: Solve for x
    x = 114,967,253.36/10,120.89
  6. Step 6: Final answer
    x = 11,359.40

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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.