Home / 21,229.08-31,799.84-12,437.32

Finding the Fourth Proportional to 21,229.08, 31,799.84 and 12,437.32

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Solution

The fourth proportional to 21,229.08, 31,799.84 and 12,437.32 is: 18,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.08 : 31,799.84 = 12,437.32 : x
  2. Step 2: Convert to fraction form
    21,229.08/31,799.84 = 12,437.32/x
  3. Step 3: Cross multiply
    21,229.08x = 31,799.84 × 12,437.32
  4. Step 4: Simplify right side
    21,229.08x = 395,504,786.03
  5. Step 5: Solve for x
    x = 395,504,786.03/21,229.08
  6. Step 6: Final answer
    x = 18,630.33

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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.