Home / 20,942.58-31,376.40-11,059.74

Finding the Fourth Proportional to 20,942.58, 31,376.40 and 11,059.74

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Solution

The fourth proportional to 20,942.58, 31,376.40 and 11,059.74 is: 16,569.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.58 : 31,376.40 = 11,059.74 : x
  2. Step 2: Convert to fraction form
    20,942.58/31,376.40 = 11,059.74/x
  3. Step 3: Cross multiply
    20,942.58x = 31,376.40 × 11,059.74
  4. Step 4: Simplify right side
    20,942.58x = 347,014,826.14
  5. Step 5: Solve for x
    x = 347,014,826.14/20,942.58
  6. Step 6: Final answer
    x = 16,569.82

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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.