Home / 13,311.53-19,979.59-6,742.32

Finding the Fourth Proportional to 13,311.53, 19,979.59 and 6,742.32

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Solution

The fourth proportional to 13,311.53, 19,979.59 and 6,742.32 is: 10,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.53 : 19,979.59 = 6,742.32 : x
  2. Step 2: Convert to fraction form
    13,311.53/19,979.59 = 6,742.32/x
  3. Step 3: Cross multiply
    13,311.53x = 19,979.59 × 6,742.32
  4. Step 4: Simplify right side
    13,311.53x = 134,708,856.05
  5. Step 5: Solve for x
    x = 134,708,856.05/13,311.53
  6. Step 6: Final answer
    x = 10,119.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.