Home / 21,186.06-31,766.73-6,390.54

Finding the Fourth Proportional to 21,186.06, 31,766.73 and 6,390.54

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Solution

The fourth proportional to 21,186.06, 31,766.73 and 6,390.54 is: 9,582.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.06 : 31,766.73 = 6,390.54 : x
  2. Step 2: Convert to fraction form
    21,186.06/31,766.73 = 6,390.54/x
  3. Step 3: Cross multiply
    21,186.06x = 31,766.73 × 6,390.54
  4. Step 4: Simplify right side
    21,186.06x = 203,006,558.73
  5. Step 5: Solve for x
    x = 203,006,558.73/21,186.06
  6. Step 6: Final answer
    x = 9,582.08

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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.