Home / 21,623.52-29,840.44-11,687.52

Finding the Fourth Proportional to 21,623.52, 29,840.44 and 11,687.52

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Solution

The fourth proportional to 21,623.52, 29,840.44 and 11,687.52 is: 16,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.52 : 29,840.44 = 11,687.52 : x
  2. Step 2: Convert to fraction form
    21,623.52/29,840.44 = 11,687.52/x
  3. Step 3: Cross multiply
    21,623.52x = 29,840.44 × 11,687.52
  4. Step 4: Simplify right side
    21,623.52x = 348,760,739.31
  5. Step 5: Solve for x
    x = 348,760,739.31/21,623.52
  6. Step 6: Final answer
    x = 16,128.77

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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.