Home / 30,764.96-42,446.68-20,704.76

Finding the Fourth Proportional to 30,764.96, 42,446.68 and 20,704.76

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Solution

The fourth proportional to 30,764.96, 42,446.68 and 20,704.76 is: 28,566.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,764.96 : 42,446.68 = 20,704.76 : x
  2. Step 2: Convert to fraction form
    30,764.96/42,446.68 = 20,704.76/x
  3. Step 3: Cross multiply
    30,764.96x = 42,446.68 × 20,704.76
  4. Step 4: Simplify right side
    30,764.96x = 878,848,322.20
  5. Step 5: Solve for x
    x = 878,848,322.20/30,764.96
  6. Step 6: Final answer
    x = 28,566.54

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.