Home / 20,551.80-30,831.24-6,511.62

Finding the Fourth Proportional to 20,551.80, 30,831.24 and 6,511.62

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Solution

The fourth proportional to 20,551.80, 30,831.24 and 6,511.62 is: 9,768.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.80 : 30,831.24 = 6,511.62 : x
  2. Step 2: Convert to fraction form
    20,551.80/30,831.24 = 6,511.62/x
  3. Step 3: Cross multiply
    20,551.80x = 30,831.24 × 6,511.62
  4. Step 4: Simplify right side
    20,551.80x = 200,761,319.01
  5. Step 5: Solve for x
    x = 200,761,319.01/20,551.80
  6. Step 6: Final answer
    x = 9,768.55

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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.