Home / 21,788.02-30,067.09-12,228.13

Finding the Fourth Proportional to 21,788.02, 30,067.09 and 12,228.13

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Solution

The fourth proportional to 21,788.02, 30,067.09 and 12,228.13 is: 16,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.02 : 30,067.09 = 12,228.13 : x
  2. Step 2: Convert to fraction form
    21,788.02/30,067.09 = 12,228.13/x
  3. Step 3: Cross multiply
    21,788.02x = 30,067.09 × 12,228.13
  4. Step 4: Simplify right side
    21,788.02x = 367,664,285.24
  5. Step 5: Solve for x
    x = 367,664,285.24/21,788.02
  6. Step 6: Final answer
    x = 16,874.61

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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.