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Finding the Fourth Proportional to 21,697.01, 29,943.17 and 12,266.45

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Solution

The fourth proportional to 21,697.01, 29,943.17 and 12,266.45 is: 16,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,697.01 : 29,943.17 = 12,266.45 : x
  2. Step 2: Convert to fraction form
    21,697.01/29,943.17 = 12,266.45/x
  3. Step 3: Cross multiply
    21,697.01x = 29,943.17 × 12,266.45
  4. Step 4: Simplify right side
    21,697.01x = 367,296,397.65
  5. Step 5: Solve for x
    x = 367,296,397.65/21,697.01
  6. Step 6: Final answer
    x = 16,928.43

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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.