Home / 20,723.92-31,085.57-5,141.54

Finding the Fourth Proportional to 20,723.92, 31,085.57 and 5,141.54

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Solution

The fourth proportional to 20,723.92, 31,085.57 and 5,141.54 is: 7,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.92 : 31,085.57 = 5,141.54 : x
  2. Step 2: Convert to fraction form
    20,723.92/31,085.57 = 5,141.54/x
  3. Step 3: Cross multiply
    20,723.92x = 31,085.57 × 5,141.54
  4. Step 4: Simplify right side
    20,723.92x = 159,827,792.15
  5. Step 5: Solve for x
    x = 159,827,792.15/20,723.92
  6. Step 6: Final answer
    x = 7,712.24

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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.