Home / 13,190.16-18,202.43-7,222.22

Finding the Fourth Proportional to 13,190.16, 18,202.43 and 7,222.22

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Solution

The fourth proportional to 13,190.16, 18,202.43 and 7,222.22 is: 9,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.16 : 18,202.43 = 7,222.22 : x
  2. Step 2: Convert to fraction form
    13,190.16/18,202.43 = 7,222.22/x
  3. Step 3: Cross multiply
    13,190.16x = 18,202.43 × 7,222.22
  4. Step 4: Simplify right side
    13,190.16x = 131,461,826.87
  5. Step 5: Solve for x
    x = 131,461,826.87/13,190.16
  6. Step 6: Final answer
    x = 9,966.66

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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.