Home / 30,672.22-45,961.41-20,639.83

Finding the Fourth Proportional to 30,672.22, 45,961.41 and 20,639.83

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Solution

The fourth proportional to 30,672.22, 45,961.41 and 20,639.83 is: 30,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.22 : 45,961.41 = 20,639.83 : x
  2. Step 2: Convert to fraction form
    30,672.22/45,961.41 = 20,639.83/x
  3. Step 3: Cross multiply
    30,672.22x = 45,961.41 × 20,639.83
  4. Step 4: Simplify right side
    30,672.22x = 948,635,688.96
  5. Step 5: Solve for x
    x = 948,635,688.96/30,672.22
  6. Step 6: Final answer
    x = 30,928.17

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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.