Home / 20,922.06-31,382.34-9,822.54

Finding the Fourth Proportional to 20,922.06, 31,382.34 and 9,822.54

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Solution

The fourth proportional to 20,922.06, 31,382.34 and 9,822.54 is: 14,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.06 : 31,382.34 = 9,822.54 : x
  2. Step 2: Convert to fraction form
    20,922.06/31,382.34 = 9,822.54/x
  3. Step 3: Cross multiply
    20,922.06x = 31,382.34 × 9,822.54
  4. Step 4: Simplify right side
    20,922.06x = 308,254,289.94
  5. Step 5: Solve for x
    x = 308,254,289.94/20,922.06
  6. Step 6: Final answer
    x = 14,733.46

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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.