Home / 21,979.64-30,330.44-13,594.52

Finding the Fourth Proportional to 21,979.64, 30,330.44 and 13,594.52

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Solution

The fourth proportional to 21,979.64, 30,330.44 and 13,594.52 is: 18,759.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.64 : 30,330.44 = 13,594.52 : x
  2. Step 2: Convert to fraction form
    21,979.64/30,330.44 = 13,594.52/x
  3. Step 3: Cross multiply
    21,979.64x = 30,330.44 × 13,594.52
  4. Step 4: Simplify right side
    21,979.64x = 412,327,773.19
  5. Step 5: Solve for x
    x = 412,327,773.19/21,979.64
  6. Step 6: Final answer
    x = 18,759.53

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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.