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Finding the Fourth Proportional to 13,099.50, 18,075.49 and 8,064.54

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Solution

The fourth proportional to 13,099.50, 18,075.49 and 8,064.54 is: 11,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.50 : 18,075.49 = 8,064.54 : x
  2. Step 2: Convert to fraction form
    13,099.50/18,075.49 = 8,064.54/x
  3. Step 3: Cross multiply
    13,099.50x = 18,075.49 × 8,064.54
  4. Step 4: Simplify right side
    13,099.50x = 145,770,491.96
  5. Step 5: Solve for x
    x = 145,770,491.96/13,099.50
  6. Step 6: Final answer
    x = 11,127.94

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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.