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Finding the Fourth Proportional to 9,339.63, 13,974.82 and 7,485.12

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Solution

The fourth proportional to 9,339.63, 13,974.82 and 7,485.12 is: 11,199.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.63 : 13,974.82 = 7,485.12 : x
  2. Step 2: Convert to fraction form
    9,339.63/13,974.82 = 7,485.12/x
  3. Step 3: Cross multiply
    9,339.63x = 13,974.82 × 7,485.12
  4. Step 4: Simplify right side
    9,339.63x = 104,603,204.68
  5. Step 5: Solve for x
    x = 104,603,204.68/9,339.63
  6. Step 6: Final answer
    x = 11,199.93

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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.