Home / 20,272.58-30,387.34-11,956.51

Finding the Fourth Proportional to 20,272.58, 30,387.34 and 11,956.51

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Solution

The fourth proportional to 20,272.58, 30,387.34 and 11,956.51 is: 17,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.58 : 30,387.34 = 11,956.51 : x
  2. Step 2: Convert to fraction form
    20,272.58/30,387.34 = 11,956.51/x
  3. Step 3: Cross multiply
    20,272.58x = 30,387.34 × 11,956.51
  4. Step 4: Simplify right side
    20,272.58x = 363,326,570.70
  5. Step 5: Solve for x
    x = 363,326,570.70/20,272.58
  6. Step 6: Final answer
    x = 17,922.07

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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.