Home / 13,550.82-18,720.75-10,831.25

Finding the Fourth Proportional to 13,550.82, 18,720.75 and 10,831.25

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Solution

The fourth proportional to 13,550.82, 18,720.75 and 10,831.25 is: 14,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.82 : 18,720.75 = 10,831.25 : x
  2. Step 2: Convert to fraction form
    13,550.82/18,720.75 = 10,831.25/x
  3. Step 3: Cross multiply
    13,550.82x = 18,720.75 × 10,831.25
  4. Step 4: Simplify right side
    13,550.82x = 202,769,029.83
  5. Step 5: Solve for x
    x = 202,769,029.83/13,550.82
  6. Step 6: Final answer
    x = 14,963.60

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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.