Home / 20,790.54-31,177.74-6,747.18

Finding the Fourth Proportional to 20,790.54, 31,177.74 and 6,747.18

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Solution

The fourth proportional to 20,790.54, 31,177.74 and 6,747.18 is: 10,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.54 : 31,177.74 = 6,747.18 : x
  2. Step 2: Convert to fraction form
    20,790.54/31,177.74 = 6,747.18/x
  3. Step 3: Cross multiply
    20,790.54x = 31,177.74 × 6,747.18
  4. Step 4: Simplify right side
    20,790.54x = 210,361,823.77
  5. Step 5: Solve for x
    x = 210,361,823.77/20,790.54
  6. Step 6: Final answer
    x = 10,118.15

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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.