Home / 13,196.68-18,211.42-7,228.36

Finding the Fourth Proportional to 13,196.68, 18,211.42 and 7,228.36

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Solution

The fourth proportional to 13,196.68, 18,211.42 and 7,228.36 is: 9,975.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,196.68 : 18,211.42 = 7,228.36 : x
  2. Step 2: Convert to fraction form
    13,196.68/18,211.42 = 7,228.36/x
  3. Step 3: Cross multiply
    13,196.68x = 18,211.42 × 7,228.36
  4. Step 4: Simplify right side
    13,196.68x = 131,638,636.27
  5. Step 5: Solve for x
    x = 131,638,636.27/13,196.68
  6. Step 6: Final answer
    x = 9,975.13

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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.