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Finding the Fourth Proportional to 21,323.98, 29,428.41 and 11,763.82

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Solution

The fourth proportional to 21,323.98, 29,428.41 and 11,763.82 is: 16,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.98 : 29,428.41 = 11,763.82 : x
  2. Step 2: Convert to fraction form
    21,323.98/29,428.41 = 11,763.82/x
  3. Step 3: Cross multiply
    21,323.98x = 29,428.41 × 11,763.82
  4. Step 4: Simplify right side
    21,323.98x = 346,190,518.13
  5. Step 5: Solve for x
    x = 346,190,518.13/21,323.98
  6. Step 6: Final answer
    x = 16,234.80

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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.