Home / 13,191.06-18,202.86-7,222.80

Finding the Fourth Proportional to 13,191.06, 18,202.86 and 7,222.80

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Solution

The fourth proportional to 13,191.06, 18,202.86 and 7,222.80 is: 9,967.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.06 : 18,202.86 = 7,222.80 : x
  2. Step 2: Convert to fraction form
    13,191.06/18,202.86 = 7,222.80/x
  3. Step 3: Cross multiply
    13,191.06x = 18,202.86 × 7,222.80
  4. Step 4: Simplify right side
    13,191.06x = 131,475,617.21
  5. Step 5: Solve for x
    x = 131,475,617.21/13,191.06
  6. Step 6: Final answer
    x = 9,967.02

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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.