Home / 20,946.87-31,425.32-6,155.46

Finding the Fourth Proportional to 20,946.87, 31,425.32 and 6,155.46

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Solution

The fourth proportional to 20,946.87, 31,425.32 and 6,155.46 is: 9,234.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.87 : 31,425.32 = 6,155.46 : x
  2. Step 2: Convert to fraction form
    20,946.87/31,425.32 = 6,155.46/x
  3. Step 3: Cross multiply
    20,946.87x = 31,425.32 × 6,155.46
  4. Step 4: Simplify right side
    20,946.87x = 193,437,315.64
  5. Step 5: Solve for x
    x = 193,437,315.64/20,946.87
  6. Step 6: Final answer
    x = 9,234.66

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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.