Home / 20,738.40-31,102.72-5,944.64

Finding the Fourth Proportional to 20,738.40, 31,102.72 and 5,944.64

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Solution

The fourth proportional to 20,738.40, 31,102.72 and 5,944.64 is: 8,915.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.40 : 31,102.72 = 5,944.64 : x
  2. Step 2: Convert to fraction form
    20,738.40/31,102.72 = 5,944.64/x
  3. Step 3: Cross multiply
    20,738.40x = 31,102.72 × 5,944.64
  4. Step 4: Simplify right side
    20,738.40x = 184,894,473.42
  5. Step 5: Solve for x
    x = 184,894,473.42/20,738.40
  6. Step 6: Final answer
    x = 8,915.56

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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.