Home / 13,161.33-18,162.57-7,192.86

Finding the Fourth Proportional to 13,161.33, 18,162.57 and 7,192.86

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Solution

The fourth proportional to 13,161.33, 18,162.57 and 7,192.86 is: 9,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.33 : 18,162.57 = 7,192.86 : x
  2. Step 2: Convert to fraction form
    13,161.33/18,162.57 = 7,192.86/x
  3. Step 3: Cross multiply
    13,161.33x = 18,162.57 × 7,192.86
  4. Step 4: Simplify right side
    13,161.33x = 130,640,823.25
  5. Step 5: Solve for x
    x = 130,640,823.25/13,161.33
  6. Step 6: Final answer
    x = 9,926.11

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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.