Home / 20,942.57-28,896.32-12,441.66

Finding the Fourth Proportional to 20,942.57, 28,896.32 and 12,441.66

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Solution

The fourth proportional to 20,942.57, 28,896.32 and 12,441.66 is: 17,166.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.57 : 28,896.32 = 12,441.66 : x
  2. Step 2: Convert to fraction form
    20,942.57/28,896.32 = 12,441.66/x
  3. Step 3: Cross multiply
    20,942.57x = 28,896.32 × 12,441.66
  4. Step 4: Simplify right side
    20,942.57x = 359,518,126.48
  5. Step 5: Solve for x
    x = 359,518,126.48/20,942.57
  6. Step 6: Final answer
    x = 17,166.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.