Home / 13,236.75-18,266.72-7,647.75

Finding the Fourth Proportional to 13,236.75, 18,266.72 and 7,647.75

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Solution

The fourth proportional to 13,236.75, 18,266.72 and 7,647.75 is: 10,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.75 : 18,266.72 = 7,647.75 : x
  2. Step 2: Convert to fraction form
    13,236.75/18,266.72 = 7,647.75/x
  3. Step 3: Cross multiply
    13,236.75x = 18,266.72 × 7,647.75
  4. Step 4: Simplify right side
    13,236.75x = 139,699,269.64
  5. Step 5: Solve for x
    x = 139,699,269.64/13,236.75
  6. Step 6: Final answer
    x = 10,553.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.