Home / 13,190.57-18,202.95-7,222.19

Finding the Fourth Proportional to 13,190.57, 18,202.95 and 7,222.19

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Solution

The fourth proportional to 13,190.57, 18,202.95 and 7,222.19 is: 9,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.57 : 18,202.95 = 7,222.19 : x
  2. Step 2: Convert to fraction form
    13,190.57/18,202.95 = 7,222.19/x
  3. Step 3: Cross multiply
    13,190.57x = 18,202.95 × 7,222.19
  4. Step 4: Simplify right side
    13,190.57x = 131,465,072.45
  5. Step 5: Solve for x
    x = 131,465,072.45/13,190.57
  6. Step 6: Final answer
    x = 9,966.60

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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.