Home / 13,075.11-18,040.72-7,409.37

Finding the Fourth Proportional to 13,075.11, 18,040.72 and 7,409.37

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Solution

The fourth proportional to 13,075.11, 18,040.72 and 7,409.37 is: 10,223.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.11 : 18,040.72 = 7,409.37 : x
  2. Step 2: Convert to fraction form
    13,075.11/18,040.72 = 7,409.37/x
  3. Step 3: Cross multiply
    13,075.11x = 18,040.72 × 7,409.37
  4. Step 4: Simplify right side
    13,075.11x = 133,670,369.55
  5. Step 5: Solve for x
    x = 133,670,369.55/13,075.11
  6. Step 6: Final answer
    x = 10,223.27

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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.