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Finding the Fourth Proportional to 17,356.80, 26,010.60 and 12,687.56

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Solution

The fourth proportional to 17,356.80, 26,010.60 and 12,687.56 is: 19,013.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,356.80 : 26,010.60 = 12,687.56 : x
  2. Step 2: Convert to fraction form
    17,356.80/26,010.60 = 12,687.56/x
  3. Step 3: Cross multiply
    17,356.80x = 26,010.60 × 12,687.56
  4. Step 4: Simplify right side
    17,356.80x = 330,011,048.14
  5. Step 5: Solve for x
    x = 330,011,048.14/17,356.80
  6. Step 6: Final answer
    x = 19,013.36

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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.