Home / 11,138.94-15,370.56-6,663.60

Finding the Fourth Proportional to 11,138.94, 15,370.56 and 6,663.60

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Solution

The fourth proportional to 11,138.94, 15,370.56 and 6,663.60 is: 9,195.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.94 : 15,370.56 = 6,663.60 : x
  2. Step 2: Convert to fraction form
    11,138.94/15,370.56 = 6,663.60/x
  3. Step 3: Cross multiply
    11,138.94x = 15,370.56 × 6,663.60
  4. Step 4: Simplify right side
    11,138.94x = 102,423,263.62
  5. Step 5: Solve for x
    x = 102,423,263.62/11,138.94
  6. Step 6: Final answer
    x = 9,195.06

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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.