Home / 20,076.15-27,717.69-12,909.27

Finding the Fourth Proportional to 20,076.15, 27,717.69 and 12,909.27

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Solution

The fourth proportional to 20,076.15, 27,717.69 and 12,909.27 is: 17,822.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.15 : 27,717.69 = 12,909.27 : x
  2. Step 2: Convert to fraction form
    20,076.15/27,717.69 = 12,909.27/x
  3. Step 3: Cross multiply
    20,076.15x = 27,717.69 × 12,909.27
  4. Step 4: Simplify right side
    20,076.15x = 357,815,296.34
  5. Step 5: Solve for x
    x = 357,815,296.34/20,076.15
  6. Step 6: Final answer
    x = 17,822.90

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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.