Home / 21,083.72-31,588.66-18,795.56

Finding the Fourth Proportional to 21,083.72, 31,588.66 and 18,795.56

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Solution

The fourth proportional to 21,083.72, 31,588.66 and 18,795.56 is: 28,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.72 : 31,588.66 = 18,795.56 : x
  2. Step 2: Convert to fraction form
    21,083.72/31,588.66 = 18,795.56/x
  3. Step 3: Cross multiply
    21,083.72x = 31,588.66 × 18,795.56
  4. Step 4: Simplify right side
    21,083.72x = 593,726,460.37
  5. Step 5: Solve for x
    x = 593,726,460.37/21,083.72
  6. Step 6: Final answer
    x = 28,160.42

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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.