Home / 20,749.06-31,128.20-5,956.84

Finding the Fourth Proportional to 20,749.06, 31,128.20 and 5,956.84

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Solution

The fourth proportional to 20,749.06, 31,128.20 and 5,956.84 is: 8,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.06 : 31,128.20 = 5,956.84 : x
  2. Step 2: Convert to fraction form
    20,749.06/31,128.20 = 5,956.84/x
  3. Step 3: Cross multiply
    20,749.06x = 31,128.20 × 5,956.84
  4. Step 4: Simplify right side
    20,749.06x = 185,425,738.35
  5. Step 5: Solve for x
    x = 185,425,738.35/20,749.06
  6. Step 6: Final answer
    x = 8,936.58

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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.