Home / 21,959.59-30,304.10-11,887.96

Finding the Fourth Proportional to 21,959.59, 30,304.10 and 11,887.96

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Solution

The fourth proportional to 21,959.59, 30,304.10 and 11,887.96 is: 16,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.59 : 30,304.10 = 11,887.96 : x
  2. Step 2: Convert to fraction form
    21,959.59/30,304.10 = 11,887.96/x
  3. Step 3: Cross multiply
    21,959.59x = 30,304.10 × 11,887.96
  4. Step 4: Simplify right side
    21,959.59x = 360,253,804.58
  5. Step 5: Solve for x
    x = 360,253,804.58/21,959.59
  6. Step 6: Final answer
    x = 16,405.31

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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.