Home / 20,293.35-30,444.35-11,979.56

Finding the Fourth Proportional to 20,293.35, 30,444.35 and 11,979.56

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Solution

The fourth proportional to 20,293.35, 30,444.35 and 11,979.56 is: 17,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.35 : 30,444.35 = 11,979.56 : x
  2. Step 2: Convert to fraction form
    20,293.35/30,444.35 = 11,979.56/x
  3. Step 3: Cross multiply
    20,293.35x = 30,444.35 × 11,979.56
  4. Step 4: Simplify right side
    20,293.35x = 364,709,705.37
  5. Step 5: Solve for x
    x = 364,709,705.37/20,293.35
  6. Step 6: Final answer
    x = 17,971.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.