Home / 13,190.54-18,202.56-7,222.05

Finding the Fourth Proportional to 13,190.54, 18,202.56 and 7,222.05

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Solution

The fourth proportional to 13,190.54, 18,202.56 and 7,222.05 is: 9,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.54 : 18,202.56 = 7,222.05 : x
  2. Step 2: Convert to fraction form
    13,190.54/18,202.56 = 7,222.05/x
  3. Step 3: Cross multiply
    13,190.54x = 18,202.56 × 7,222.05
  4. Step 4: Simplify right side
    13,190.54x = 131,459,798.45
  5. Step 5: Solve for x
    x = 131,459,798.45/13,190.54
  6. Step 6: Final answer
    x = 9,966.22

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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.