Home / 28,838.88-43,228.62-20,921.67

Finding the Fourth Proportional to 28,838.88, 43,228.62 and 20,921.67

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Solution

The fourth proportional to 28,838.88, 43,228.62 and 20,921.67 is: 31,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.88 : 43,228.62 = 20,921.67 : x
  2. Step 2: Convert to fraction form
    28,838.88/43,228.62 = 20,921.67/x
  3. Step 3: Cross multiply
    28,838.88x = 43,228.62 × 20,921.67
  4. Step 4: Simplify right side
    28,838.88x = 904,414,922.20
  5. Step 5: Solve for x
    x = 904,414,922.20/28,838.88
  6. Step 6: Final answer
    x = 31,360.96

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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.