Home / 22,303.20-30,778.80-12,231.60

Finding the Fourth Proportional to 22,303.20, 30,778.80 and 12,231.60

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Solution

The fourth proportional to 22,303.20, 30,778.80 and 12,231.60 is: 16,879.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,303.20 : 30,778.80 = 12,231.60 : x
  2. Step 2: Convert to fraction form
    22,303.20/30,778.80 = 12,231.60/x
  3. Step 3: Cross multiply
    22,303.20x = 30,778.80 × 12,231.60
  4. Step 4: Simplify right side
    22,303.20x = 376,473,970.08
  5. Step 5: Solve for x
    x = 376,473,970.08/22,303.20
  6. Step 6: Final answer
    x = 16,879.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.