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Finding the Fourth Proportional to 21,695.80, 29,940.06 and 12,264.34

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Solution

The fourth proportional to 21,695.80, 29,940.06 and 12,264.34 is: 16,924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.80 : 29,940.06 = 12,264.34 : x
  2. Step 2: Convert to fraction form
    21,695.80/29,940.06 = 12,264.34/x
  3. Step 3: Cross multiply
    21,695.80x = 29,940.06 × 12,264.34
  4. Step 4: Simplify right side
    21,695.80x = 367,195,075.46
  5. Step 5: Solve for x
    x = 367,195,075.46/21,695.80
  6. Step 6: Final answer
    x = 16,924.71

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