Home / 21,236.24-29,305.80-11,804.72

Finding the Fourth Proportional to 21,236.24, 29,305.80 and 11,804.72

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Solution

The fourth proportional to 21,236.24, 29,305.80 and 11,804.72 is: 16,290.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.24 : 29,305.80 = 11,804.72 : x
  2. Step 2: Convert to fraction form
    21,236.24/29,305.80 = 11,804.72/x
  3. Step 3: Cross multiply
    21,236.24x = 29,305.80 × 11,804.72
  4. Step 4: Simplify right side
    21,236.24x = 345,946,763.38
  5. Step 5: Solve for x
    x = 345,946,763.38/21,236.24
  6. Step 6: Final answer
    x = 16,290.40

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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.