Home / 20,788.64-28,687.87-11,836.01

Finding the Fourth Proportional to 20,788.64, 28,687.87 and 11,836.01

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Solution

The fourth proportional to 20,788.64, 28,687.87 and 11,836.01 is: 16,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.64 : 28,687.87 = 11,836.01 : x
  2. Step 2: Convert to fraction form
    20,788.64/28,687.87 = 11,836.01/x
  3. Step 3: Cross multiply
    20,788.64x = 28,687.87 × 11,836.01
  4. Step 4: Simplify right side
    20,788.64x = 339,549,916.20
  5. Step 5: Solve for x
    x = 339,549,916.20/20,788.64
  6. Step 6: Final answer
    x = 16,333.44

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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.