Home / 20,845.77-31,238.28-15,826.65

Finding the Fourth Proportional to 20,845.77, 31,238.28 and 15,826.65

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Solution

The fourth proportional to 20,845.77, 31,238.28 and 15,826.65 is: 23,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.77 : 31,238.28 = 15,826.65 : x
  2. Step 2: Convert to fraction form
    20,845.77/31,238.28 = 15,826.65/x
  3. Step 3: Cross multiply
    20,845.77x = 31,238.28 × 15,826.65
  4. Step 4: Simplify right side
    20,845.77x = 494,397,324.16
  5. Step 5: Solve for x
    x = 494,397,324.16/20,845.77
  6. Step 6: Final answer
    x = 23,716.91

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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.