Home / 20,255.81-27,954.43-11,305.06

Finding the Fourth Proportional to 20,255.81, 27,954.43 and 11,305.06

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Solution

The fourth proportional to 20,255.81, 27,954.43 and 11,305.06 is: 15,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.81 : 27,954.43 = 11,305.06 : x
  2. Step 2: Convert to fraction form
    20,255.81/27,954.43 = 11,305.06/x
  3. Step 3: Cross multiply
    20,255.81x = 27,954.43 × 11,305.06
  4. Step 4: Simplify right side
    20,255.81x = 316,026,508.42
  5. Step 5: Solve for x
    x = 316,026,508.42/20,255.81
  6. Step 6: Final answer
    x = 15,601.77

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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.