Home / 20,942.40-31,376.24-11,059.59

Finding the Fourth Proportional to 20,942.40, 31,376.24 and 11,059.59

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Solution

The fourth proportional to 20,942.40, 31,376.24 and 11,059.59 is: 16,569.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.40 : 31,376.24 = 11,059.59 : x
  2. Step 2: Convert to fraction form
    20,942.40/31,376.24 = 11,059.59/x
  3. Step 3: Cross multiply
    20,942.40x = 31,376.24 × 11,059.59
  4. Step 4: Simplify right side
    20,942.40x = 347,008,350.14
  5. Step 5: Solve for x
    x = 347,008,350.14/20,942.40
  6. Step 6: Final answer
    x = 16,569.66

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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.