Home / 20,640.36-30,964.94-5,853.80

Finding the Fourth Proportional to 20,640.36, 30,964.94 and 5,853.80

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Solution

The fourth proportional to 20,640.36, 30,964.94 and 5,853.80 is: 8,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.36 : 30,964.94 = 5,853.80 : x
  2. Step 2: Convert to fraction form
    20,640.36/30,964.94 = 5,853.80/x
  3. Step 3: Cross multiply
    20,640.36x = 30,964.94 × 5,853.80
  4. Step 4: Simplify right side
    20,640.36x = 181,262,565.77
  5. Step 5: Solve for x
    x = 181,262,565.77/20,640.36
  6. Step 6: Final answer
    x = 8,781.95

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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.