Home / 11,153.76-15,394.80-8,173.92

Finding the Fourth Proportional to 11,153.76, 15,394.80 and 8,173.92

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Solution

The fourth proportional to 11,153.76, 15,394.80 and 8,173.92 is: 11,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.76 : 15,394.80 = 8,173.92 : x
  2. Step 2: Convert to fraction form
    11,153.76/15,394.80 = 8,173.92/x
  3. Step 3: Cross multiply
    11,153.76x = 15,394.80 × 8,173.92
  4. Step 4: Simplify right side
    11,153.76x = 125,835,863.62
  5. Step 5: Solve for x
    x = 125,835,863.62/11,153.76
  6. Step 6: Final answer
    x = 11,281.92

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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.