Home / 13,119.09-19,661.32-5,323.65

Finding the Fourth Proportional to 13,119.09, 19,661.32 and 5,323.65

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Solution

The fourth proportional to 13,119.09, 19,661.32 and 5,323.65 is: 7,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.09 : 19,661.32 = 5,323.65 : x
  2. Step 2: Convert to fraction form
    13,119.09/19,661.32 = 5,323.65/x
  3. Step 3: Cross multiply
    13,119.09x = 19,661.32 × 5,323.65
  4. Step 4: Simplify right side
    13,119.09x = 104,669,986.22
  5. Step 5: Solve for x
    x = 104,669,986.22/13,119.09
  6. Step 6: Final answer
    x = 7,978.45

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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.