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Finding the Fourth Proportional to 17,665.44, 26,440.47 and 12,984.21

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Solution

The fourth proportional to 17,665.44, 26,440.47 and 12,984.21 is: 19,433.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,665.44 : 26,440.47 = 12,984.21 : x
  2. Step 2: Convert to fraction form
    17,665.44/26,440.47 = 12,984.21/x
  3. Step 3: Cross multiply
    17,665.44x = 26,440.47 × 12,984.21
  4. Step 4: Simplify right side
    17,665.44x = 343,308,614.98
  5. Step 5: Solve for x
    x = 343,308,614.98/17,665.44
  6. Step 6: Final answer
    x = 19,433.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.