Home / 20,530.64-30,796.44-6,680.72

Finding the Fourth Proportional to 20,530.64, 30,796.44 and 6,680.72

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Solution

The fourth proportional to 20,530.64, 30,796.44 and 6,680.72 is: 10,021.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.64 : 30,796.44 = 6,680.72 : x
  2. Step 2: Convert to fraction form
    20,530.64/30,796.44 = 6,680.72/x
  3. Step 3: Cross multiply
    20,530.64x = 30,796.44 × 6,680.72
  4. Step 4: Simplify right side
    20,530.64x = 205,742,392.64
  5. Step 5: Solve for x
    x = 205,742,392.64/20,530.64
  6. Step 6: Final answer
    x = 10,021.24

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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.