Home / 12,075.75-18,120.92-5,150.25

Finding the Fourth Proportional to 12,075.75, 18,120.92 and 5,150.25

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Solution

The fourth proportional to 12,075.75, 18,120.92 and 5,150.25 is: 7,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,075.75 : 18,120.92 = 5,150.25 : x
  2. Step 2: Convert to fraction form
    12,075.75/18,120.92 = 5,150.25/x
  3. Step 3: Cross multiply
    12,075.75x = 18,120.92 × 5,150.25
  4. Step 4: Simplify right side
    12,075.75x = 93,327,242.48
  5. Step 5: Solve for x
    x = 93,327,242.48/12,075.75
  6. Step 6: Final answer
    x = 7,728.48

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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.