Home / 20,718.23-31,085.54-7,571.62

Finding the Fourth Proportional to 20,718.23, 31,085.54 and 7,571.62

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Solution

The fourth proportional to 20,718.23, 31,085.54 and 7,571.62 is: 11,360.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.23 : 31,085.54 = 7,571.62 : x
  2. Step 2: Convert to fraction form
    20,718.23/31,085.54 = 7,571.62/x
  3. Step 3: Cross multiply
    20,718.23x = 31,085.54 × 7,571.62
  4. Step 4: Simplify right side
    20,718.23x = 235,367,896.37
  5. Step 5: Solve for x
    x = 235,367,896.37/20,718.23
  6. Step 6: Final answer
    x = 11,360.43

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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.