Home / 10,991.76-15,166.44-6,518.88

Finding the Fourth Proportional to 10,991.76, 15,166.44 and 6,518.88

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Solution

The fourth proportional to 10,991.76, 15,166.44 and 6,518.88 is: 8,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.76 : 15,166.44 = 6,518.88 : x
  2. Step 2: Convert to fraction form
    10,991.76/15,166.44 = 6,518.88/x
  3. Step 3: Cross multiply
    10,991.76x = 15,166.44 × 6,518.88
  4. Step 4: Simplify right side
    10,991.76x = 98,868,202.39
  5. Step 5: Solve for x
    x = 98,868,202.39/10,991.76
  6. Step 6: Final answer
    x = 8,994.76

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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.