Home / 28,193.46-42,173.31-21,479.15

Finding the Fourth Proportional to 28,193.46, 42,173.31 and 21,479.15

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Solution

The fourth proportional to 28,193.46, 42,173.31 and 21,479.15 is: 32,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.46 : 42,173.31 = 21,479.15 : x
  2. Step 2: Convert to fraction form
    28,193.46/42,173.31 = 21,479.15/x
  3. Step 3: Cross multiply
    28,193.46x = 42,173.31 × 21,479.15
  4. Step 4: Simplify right side
    28,193.46x = 905,846,640.62
  5. Step 5: Solve for x
    x = 905,846,640.62/28,193.46
  6. Step 6: Final answer
    x = 32,129.67

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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.