Home / 21,220.94-31,958.36-19,329.27

Finding the Fourth Proportional to 21,220.94, 31,958.36 and 19,329.27

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Solution

The fourth proportional to 21,220.94, 31,958.36 and 19,329.27 is: 29,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.94 : 31,958.36 = 19,329.27 : x
  2. Step 2: Convert to fraction form
    21,220.94/31,958.36 = 19,329.27/x
  3. Step 3: Cross multiply
    21,220.94x = 31,958.36 × 19,329.27
  4. Step 4: Simplify right side
    21,220.94x = 617,731,817.52
  5. Step 5: Solve for x
    x = 617,731,817.52/21,220.94
  6. Step 6: Final answer
    x = 29,109.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.