Home / 20,673.64-28,530.66-11,719.72

Finding the Fourth Proportional to 20,673.64, 28,530.66 and 11,719.72

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Solution

The fourth proportional to 20,673.64, 28,530.66 and 11,719.72 is: 16,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.64 : 28,530.66 = 11,719.72 : x
  2. Step 2: Convert to fraction form
    20,673.64/28,530.66 = 11,719.72/x
  3. Step 3: Cross multiply
    20,673.64x = 28,530.66 × 11,719.72
  4. Step 4: Simplify right side
    20,673.64x = 334,371,346.62
  5. Step 5: Solve for x
    x = 334,371,346.62/20,673.64
  6. Step 6: Final answer
    x = 16,173.80

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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.