Home / 13,160.25-18,161.15-7,571.25

Finding the Fourth Proportional to 13,160.25, 18,161.15 and 7,571.25

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Solution

The fourth proportional to 13,160.25, 18,161.15 and 7,571.25 is: 10,448.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.25 : 18,161.15 = 7,571.25 : x
  2. Step 2: Convert to fraction form
    13,160.25/18,161.15 = 7,571.25/x
  3. Step 3: Cross multiply
    13,160.25x = 18,161.15 × 7,571.25
  4. Step 4: Simplify right side
    13,160.25x = 137,502,569.08
  5. Step 5: Solve for x
    x = 137,502,569.08/13,160.25
  6. Step 6: Final answer
    x = 10,448.33

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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.