Home / 13,455.72-18,571.62-7,868.52

Finding the Fourth Proportional to 13,455.72, 18,571.62 and 7,868.52

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Solution

The fourth proportional to 13,455.72, 18,571.62 and 7,868.52 is: 10,860.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.72 : 18,571.62 = 7,868.52 : x
  2. Step 2: Convert to fraction form
    13,455.72/18,571.62 = 7,868.52/x
  3. Step 3: Cross multiply
    13,455.72x = 18,571.62 × 7,868.52
  4. Step 4: Simplify right side
    13,455.72x = 146,131,163.40
  5. Step 5: Solve for x
    x = 146,131,163.40/13,455.72
  6. Step 6: Final answer
    x = 10,860.15

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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.