Home / 20,426.22-30,631.46-7,944.59

Finding the Fourth Proportional to 20,426.22, 30,631.46 and 7,944.59

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Solution

The fourth proportional to 20,426.22, 30,631.46 and 7,944.59 is: 11,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.22 : 30,631.46 = 7,944.59 : x
  2. Step 2: Convert to fraction form
    20,426.22/30,631.46 = 7,944.59/x
  3. Step 3: Cross multiply
    20,426.22x = 30,631.46 × 7,944.59
  4. Step 4: Simplify right side
    20,426.22x = 243,354,197.92
  5. Step 5: Solve for x
    x = 243,354,197.92/20,426.22
  6. Step 6: Final answer
    x = 11,913.81

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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.