Home / 20,213.96-30,325.26-15,285.56

Finding the Fourth Proportional to 20,213.96, 30,325.26 and 15,285.56

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Solution

The fourth proportional to 20,213.96, 30,325.26 and 15,285.56 is: 22,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.96 : 30,325.26 = 15,285.56 : x
  2. Step 2: Convert to fraction form
    20,213.96/30,325.26 = 15,285.56/x
  3. Step 3: Cross multiply
    20,213.96x = 30,325.26 × 15,285.56
  4. Step 4: Simplify right side
    20,213.96x = 463,538,581.25
  5. Step 5: Solve for x
    x = 463,538,581.25/20,213.96
  6. Step 6: Final answer
    x = 22,931.61

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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.