Home / 20,129.58-27,776.79-11,750.94

Finding the Fourth Proportional to 20,129.58, 27,776.79 and 11,750.94

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Solution

The fourth proportional to 20,129.58, 27,776.79 and 11,750.94 is: 16,215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.58 : 27,776.79 = 11,750.94 : x
  2. Step 2: Convert to fraction form
    20,129.58/27,776.79 = 11,750.94/x
  3. Step 3: Cross multiply
    20,129.58x = 27,776.79 × 11,750.94
  4. Step 4: Simplify right side
    20,129.58x = 326,403,392.68
  5. Step 5: Solve for x
    x = 326,403,392.68/20,129.58
  6. Step 6: Final answer
    x = 16,215.11

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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.