Home / 21,212.56-31,832.23-11,858.71

Finding the Fourth Proportional to 21,212.56, 31,832.23 and 11,858.71

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Solution

The fourth proportional to 21,212.56, 31,832.23 and 11,858.71 is: 17,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.56 : 31,832.23 = 11,858.71 : x
  2. Step 2: Convert to fraction form
    21,212.56/31,832.23 = 11,858.71/x
  3. Step 3: Cross multiply
    21,212.56x = 31,832.23 × 11,858.71
  4. Step 4: Simplify right side
    21,212.56x = 377,489,184.22
  5. Step 5: Solve for x
    x = 377,489,184.22/21,212.56
  6. Step 6: Final answer
    x = 17,795.55

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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.