Home / 13,571.94-18,722.71-11,185.68

Finding the Fourth Proportional to 13,571.94, 18,722.71 and 11,185.68

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Solution

The fourth proportional to 13,571.94, 18,722.71 and 11,185.68 is: 15,430.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.94 : 18,722.71 = 11,185.68 : x
  2. Step 2: Convert to fraction form
    13,571.94/18,722.71 = 11,185.68/x
  3. Step 3: Cross multiply
    13,571.94x = 18,722.71 × 11,185.68
  4. Step 4: Simplify right side
    13,571.94x = 209,426,242.79
  5. Step 5: Solve for x
    x = 209,426,242.79/13,571.94
  6. Step 6: Final answer
    x = 15,430.83

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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.