Home / 11,150.80-15,388.20-6,435.04

Finding the Fourth Proportional to 11,150.80, 15,388.20 and 6,435.04

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Solution

The fourth proportional to 11,150.80, 15,388.20 and 6,435.04 is: 8,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.80 : 15,388.20 = 6,435.04 : x
  2. Step 2: Convert to fraction form
    11,150.80/15,388.20 = 6,435.04/x
  3. Step 3: Cross multiply
    11,150.80x = 15,388.20 × 6,435.04
  4. Step 4: Simplify right side
    11,150.80x = 99,023,682.53
  5. Step 5: Solve for x
    x = 99,023,682.53/11,150.80
  6. Step 6: Final answer
    x = 8,880.41

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Double scale
Find fourth proportional to 11,151.80, 15,389.58 and 6,436.04
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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.