Home / 20,085.39-27,712.10-11,586.85

Finding the Fourth Proportional to 20,085.39, 27,712.10 and 11,586.85

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Solution

The fourth proportional to 20,085.39, 27,712.10 and 11,586.85 is: 15,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.39 : 27,712.10 = 11,586.85 : x
  2. Step 2: Convert to fraction form
    20,085.39/27,712.10 = 11,586.85/x
  3. Step 3: Cross multiply
    20,085.39x = 27,712.10 × 11,586.85
  4. Step 4: Simplify right side
    20,085.39x = 321,095,872.98
  5. Step 5: Solve for x
    x = 321,095,872.98/20,085.39
  6. Step 6: Final answer
    x = 15,986.54

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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.