Home / 20,109.06-27,749.25-12,146.58

Finding the Fourth Proportional to 20,109.06, 27,749.25 and 12,146.58

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Solution

The fourth proportional to 20,109.06, 27,749.25 and 12,146.58 is: 16,761.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.06 : 27,749.25 = 12,146.58 : x
  2. Step 2: Convert to fraction form
    20,109.06/27,749.25 = 12,146.58/x
  3. Step 3: Cross multiply
    20,109.06x = 27,749.25 × 12,146.58
  4. Step 4: Simplify right side
    20,109.06x = 337,058,485.07
  5. Step 5: Solve for x
    x = 337,058,485.07/20,109.06
  6. Step 6: Final answer
    x = 16,761.52

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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.