Home / 21,512.14-32,261.19-20,112.82

Finding the Fourth Proportional to 21,512.14, 32,261.19 and 20,112.82

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Solution

The fourth proportional to 21,512.14, 32,261.19 and 20,112.82 is: 30,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.14 : 32,261.19 = 20,112.82 : x
  2. Step 2: Convert to fraction form
    21,512.14/32,261.19 = 20,112.82/x
  3. Step 3: Cross multiply
    21,512.14x = 32,261.19 × 20,112.82
  4. Step 4: Simplify right side
    21,512.14x = 648,863,507.46
  5. Step 5: Solve for x
    x = 648,863,507.46/21,512.14
  6. Step 6: Final answer
    x = 30,162.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.