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Finding the Fourth Proportional to 21,295.58, 29,387.94 and 12,797.83

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Solution

The fourth proportional to 21,295.58, 29,387.94 and 12,797.83 is: 17,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.58 : 29,387.94 = 12,797.83 : x
  2. Step 2: Convert to fraction form
    21,295.58/29,387.94 = 12,797.83/x
  3. Step 3: Cross multiply
    21,295.58x = 29,387.94 × 12,797.83
  4. Step 4: Simplify right side
    21,295.58x = 376,101,920.90
  5. Step 5: Solve for x
    x = 376,101,920.90/21,295.58
  6. Step 6: Final answer
    x = 17,661.03

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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.