Home / 21,623.26-29,840.06-12,191.82

Finding the Fourth Proportional to 21,623.26, 29,840.06 and 12,191.82

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Solution

The fourth proportional to 21,623.26, 29,840.06 and 12,191.82 is: 16,824.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.26 : 29,840.06 = 12,191.82 : x
  2. Step 2: Convert to fraction form
    21,623.26/29,840.06 = 12,191.82/x
  3. Step 3: Cross multiply
    21,623.26x = 29,840.06 × 12,191.82
  4. Step 4: Simplify right side
    21,623.26x = 363,804,640.31
  5. Step 5: Solve for x
    x = 363,804,640.31/21,623.26
  6. Step 6: Final answer
    x = 16,824.69

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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.