Home / 20,112.15-27,773.45-12,954.52

Finding the Fourth Proportional to 20,112.15, 27,773.45 and 12,954.52

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Solution

The fourth proportional to 20,112.15, 27,773.45 and 12,954.52 is: 17,889.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.15 : 27,773.45 = 12,954.52 : x
  2. Step 2: Convert to fraction form
    20,112.15/27,773.45 = 12,954.52/x
  3. Step 3: Cross multiply
    20,112.15x = 27,773.45 × 12,954.52
  4. Step 4: Simplify right side
    20,112.15x = 359,791,713.49
  5. Step 5: Solve for x
    x = 359,791,713.49/20,112.15
  6. Step 6: Final answer
    x = 17,889.27

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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.