Home / 13,921.56-20,882.34-5,154.12

Finding the Fourth Proportional to 13,921.56, 20,882.34 and 5,154.12

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Solution

The fourth proportional to 13,921.56, 20,882.34 and 5,154.12 is: 7,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.56 : 20,882.34 = 5,154.12 : x
  2. Step 2: Convert to fraction form
    13,921.56/20,882.34 = 5,154.12/x
  3. Step 3: Cross multiply
    13,921.56x = 20,882.34 × 5,154.12
  4. Step 4: Simplify right side
    13,921.56x = 107,630,086.24
  5. Step 5: Solve for x
    x = 107,630,086.24/13,921.56
  6. Step 6: Final answer
    x = 7,731.18

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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.