Home / 21,601.44-29,809.60-12,169.80

Finding the Fourth Proportional to 21,601.44, 29,809.60 and 12,169.80

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Solution

The fourth proportional to 21,601.44, 29,809.60 and 12,169.80 is: 16,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,601.44 : 29,809.60 = 12,169.80 : x
  2. Step 2: Convert to fraction form
    21,601.44/29,809.60 = 12,169.80/x
  3. Step 3: Cross multiply
    21,601.44x = 29,809.60 × 12,169.80
  4. Step 4: Simplify right side
    21,601.44x = 362,776,870.08
  5. Step 5: Solve for x
    x = 362,776,870.08/21,601.44
  6. Step 6: Final answer
    x = 16,794.11

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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.