Home / 11,495.64-15,869.88-6,781.44

Finding the Fourth Proportional to 11,495.64, 15,869.88 and 6,781.44

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Solution

The fourth proportional to 11,495.64, 15,869.88 and 6,781.44 is: 9,361.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,495.64 : 15,869.88 = 6,781.44 : x
  2. Step 2: Convert to fraction form
    11,495.64/15,869.88 = 6,781.44/x
  3. Step 3: Cross multiply
    11,495.64x = 15,869.88 × 6,781.44
  4. Step 4: Simplify right side
    11,495.64x = 107,620,639.03
  5. Step 5: Solve for x
    x = 107,620,639.03/11,495.64
  6. Step 6: Final answer
    x = 9,361.87

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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.