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Finding the Fourth Proportional to 21,644.04, 29,869.15 and 12,697.98

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Solution

The fourth proportional to 21,644.04, 29,869.15 and 12,697.98 is: 17,523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.04 : 29,869.15 = 12,697.98 : x
  2. Step 2: Convert to fraction form
    21,644.04/29,869.15 = 12,697.98/x
  3. Step 3: Cross multiply
    21,644.04x = 29,869.15 × 12,697.98
  4. Step 4: Simplify right side
    21,644.04x = 379,277,869.32
  5. Step 5: Solve for x
    x = 379,277,869.32/21,644.04
  6. Step 6: Final answer
    x = 17,523.43

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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.