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Finding the Fourth Proportional to 17,647.80, 26,471.70 and 7,259.55

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Solution

The fourth proportional to 17,647.80, 26,471.70 and 7,259.55 is: 10,889.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,647.80 : 26,471.70 = 7,259.55 : x
  2. Step 2: Convert to fraction form
    17,647.80/26,471.70 = 7,259.55/x
  3. Step 3: Cross multiply
    17,647.80x = 26,471.70 × 7,259.55
  4. Step 4: Simplify right side
    17,647.80x = 192,172,629.74
  5. Step 5: Solve for x
    x = 192,172,629.74/17,647.80
  6. Step 6: Final answer
    x = 10,889.33

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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.