Home / 13,190.31-18,202.68-7,222.02

Finding the Fourth Proportional to 13,190.31, 18,202.68 and 7,222.02

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Solution

The fourth proportional to 13,190.31, 18,202.68 and 7,222.02 is: 9,966.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.31 : 18,202.68 = 7,222.02 : x
  2. Step 2: Convert to fraction form
    13,190.31/18,202.68 = 7,222.02/x
  3. Step 3: Cross multiply
    13,190.31x = 18,202.68 × 7,222.02
  4. Step 4: Simplify right side
    13,190.31x = 131,460,119.01
  5. Step 5: Solve for x
    x = 131,460,119.01/13,190.31
  6. Step 6: Final answer
    x = 9,966.42

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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.