Home / 21,630.39-29,844.77-12,198.96

Finding the Fourth Proportional to 21,630.39, 29,844.77 and 12,198.96

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Solution

The fourth proportional to 21,630.39, 29,844.77 and 12,198.96 is: 16,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.39 : 29,844.77 = 12,198.96 : x
  2. Step 2: Convert to fraction form
    21,630.39/29,844.77 = 12,198.96/x
  3. Step 3: Cross multiply
    21,630.39x = 29,844.77 × 12,198.96
  4. Step 4: Simplify right side
    21,630.39x = 364,075,094.44
  5. Step 5: Solve for x
    x = 364,075,094.44/21,630.39
  6. Step 6: Final answer
    x = 16,831.65

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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.