Home / 20,137.84-27,790.16-12,177.77

Finding the Fourth Proportional to 20,137.84, 27,790.16 and 12,177.77

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Solution

The fourth proportional to 20,137.84, 27,790.16 and 12,177.77 is: 16,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.84 : 27,790.16 = 12,177.77 : x
  2. Step 2: Convert to fraction form
    20,137.84/27,790.16 = 12,177.77/x
  3. Step 3: Cross multiply
    20,137.84x = 27,790.16 × 12,177.77
  4. Step 4: Simplify right side
    20,137.84x = 338,421,976.90
  5. Step 5: Solve for x
    x = 338,421,976.90/20,137.84
  6. Step 6: Final answer
    x = 16,805.28

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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.