Home / 21,999.31-30,359.26-11,927.72

Finding the Fourth Proportional to 21,999.31, 30,359.26 and 11,927.72

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Solution

The fourth proportional to 21,999.31, 30,359.26 and 11,927.72 is: 16,460.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.31 : 30,359.26 = 11,927.72 : x
  2. Step 2: Convert to fraction form
    21,999.31/30,359.26 = 11,927.72/x
  3. Step 3: Cross multiply
    21,999.31x = 30,359.26 × 11,927.72
  4. Step 4: Simplify right side
    21,999.31x = 362,116,843.50
  5. Step 5: Solve for x
    x = 362,116,843.50/21,999.31
  6. Step 6: Final answer
    x = 16,460.37

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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.