Home / 11,135.60-15,359.73-7,161.74

Finding the Fourth Proportional to 11,135.60, 15,359.73 and 7,161.74

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Solution

The fourth proportional to 11,135.60, 15,359.73 and 7,161.74 is: 9,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.60 : 15,359.73 = 7,161.74 : x
  2. Step 2: Convert to fraction form
    11,135.60/15,359.73 = 7,161.74/x
  3. Step 3: Cross multiply
    11,135.60x = 15,359.73 × 7,161.74
  4. Step 4: Simplify right side
    11,135.60x = 110,002,392.73
  5. Step 5: Solve for x
    x = 110,002,392.73/11,135.60
  6. Step 6: Final answer
    x = 9,878.44

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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.