Home / 21,623.25-29,840.10-12,191.82

Finding the Fourth Proportional to 21,623.25, 29,840.10 and 12,191.82

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Solution

The fourth proportional to 21,623.25, 29,840.10 and 12,191.82 is: 16,824.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.25 : 29,840.10 = 12,191.82 : x
  2. Step 2: Convert to fraction form
    21,623.25/29,840.10 = 12,191.82/x
  3. Step 3: Cross multiply
    21,623.25x = 29,840.10 × 12,191.82
  4. Step 4: Simplify right side
    21,623.25x = 363,804,970.36
  5. Step 5: Solve for x
    x = 363,804,970.36/21,623.25
  6. Step 6: Final answer
    x = 16,824.71

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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.