Home / 21,125.93-29,122.73-16,081.37

Finding the Fourth Proportional to 21,125.93, 29,122.73 and 16,081.37

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Solution

The fourth proportional to 21,125.93, 29,122.73 and 16,081.37 is: 22,168.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.93 : 29,122.73 = 16,081.37 : x
  2. Step 2: Convert to fraction form
    21,125.93/29,122.73 = 16,081.37/x
  3. Step 3: Cross multiply
    21,125.93x = 29,122.73 × 16,081.37
  4. Step 4: Simplify right side
    21,125.93x = 468,333,396.54
  5. Step 5: Solve for x
    x = 468,333,396.54/21,125.93
  6. Step 6: Final answer
    x = 22,168.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.