Home / 20,211.15-27,890.66-11,258.17

Finding the Fourth Proportional to 20,211.15, 27,890.66 and 11,258.17

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Solution

The fourth proportional to 20,211.15, 27,890.66 and 11,258.17 is: 15,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.15 : 27,890.66 = 11,258.17 : x
  2. Step 2: Convert to fraction form
    20,211.15/27,890.66 = 11,258.17/x
  3. Step 3: Cross multiply
    20,211.15x = 27,890.66 × 11,258.17
  4. Step 4: Simplify right side
    20,211.15x = 313,997,652.24
  5. Step 5: Solve for x
    x = 313,997,652.24/20,211.15
  6. Step 6: Final answer
    x = 15,535.86

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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.