Home / 21,438-29,584.44-12,006.54

Finding the Fourth Proportional to 21,438, 29,584.44 and 12,006.54

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Solution

The fourth proportional to 21,438, 29,584.44 and 12,006.54 is: 16,569.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438 : 29,584.44 = 12,006.54 : x
  2. Step 2: Convert to fraction form
    21,438/29,584.44 = 12,006.54/x
  3. Step 3: Cross multiply
    21,438x = 29,584.44 × 12,006.54
  4. Step 4: Simplify right side
    21,438x = 355,206,762.24
  5. Step 5: Solve for x
    x = 355,206,762.24/21,438
  6. Step 6: Final answer
    x = 16,569.03

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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.