Home / 21,439.26-29,586.16-12,007.82

Finding the Fourth Proportional to 21,439.26, 29,586.16 and 12,007.82

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Solution

The fourth proportional to 21,439.26, 29,586.16 and 12,007.82 is: 16,570.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.26 : 29,586.16 = 12,007.82 : x
  2. Step 2: Convert to fraction form
    21,439.26/29,586.16 = 12,007.82/x
  3. Step 3: Cross multiply
    21,439.26x = 29,586.16 × 12,007.82
  4. Step 4: Simplify right side
    21,439.26x = 355,265,283.77
  5. Step 5: Solve for x
    x = 355,265,283.77/21,439.26
  6. Step 6: Final answer
    x = 16,570.78

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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.