Home / 16,789.36-23,135.12-12,989.44

Finding the Fourth Proportional to 16,789.36, 23,135.12 and 12,989.44

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Solution

The fourth proportional to 16,789.36, 23,135.12 and 12,989.44 is: 17,898.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,789.36 : 23,135.12 = 12,989.44 : x
  2. Step 2: Convert to fraction form
    16,789.36/23,135.12 = 12,989.44/x
  3. Step 3: Cross multiply
    16,789.36x = 23,135.12 × 12,989.44
  4. Step 4: Simplify right side
    16,789.36x = 300,512,253.13
  5. Step 5: Solve for x
    x = 300,512,253.13/16,789.36
  6. Step 6: Final answer
    x = 17,898.97

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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.