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Finding the Fourth Proportional to 17,605.78, 26,408.78 and 4,458.14

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Solution

The fourth proportional to 17,605.78, 26,408.78 and 4,458.14 is: 6,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,605.78 : 26,408.78 = 4,458.14 : x
  2. Step 2: Convert to fraction form
    17,605.78/26,408.78 = 4,458.14/x
  3. Step 3: Cross multiply
    17,605.78x = 26,408.78 × 4,458.14
  4. Step 4: Simplify right side
    17,605.78x = 117,734,038.47
  5. Step 5: Solve for x
    x = 117,734,038.47/17,605.78
  6. Step 6: Final answer
    x = 6,687.24

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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.