Home / 51,921.56-77,911.92-20,334.20

Finding the Fourth Proportional to 51,921.56, 77,911.92 and 20,334.20

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Solution

The fourth proportional to 51,921.56, 77,911.92 and 20,334.20 is: 30,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,921.56 : 77,911.92 = 20,334.20 : x
  2. Step 2: Convert to fraction form
    51,921.56/77,911.92 = 20,334.20/x
  3. Step 3: Cross multiply
    51,921.56x = 77,911.92 × 20,334.20
  4. Step 4: Simplify right side
    51,921.56x = 1,584,276,563.66
  5. Step 5: Solve for x
    x = 1,584,276,563.66/51,921.56
  6. Step 6: Final answer
    x = 30,512.88

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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.