Home / 13,190.15-18,202.37-7,221.77

Finding the Fourth Proportional to 13,190.15, 18,202.37 and 7,221.77

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Solution

The fourth proportional to 13,190.15, 18,202.37 and 7,221.77 is: 9,966.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.15 : 18,202.37 = 7,221.77 : x
  2. Step 2: Convert to fraction form
    13,190.15/18,202.37 = 7,221.77/x
  3. Step 3: Cross multiply
    13,190.15x = 18,202.37 × 7,221.77
  4. Step 4: Simplify right side
    13,190.15x = 131,453,329.59
  5. Step 5: Solve for x
    x = 131,453,329.59/13,190.15
  6. Step 6: Final answer
    x = 9,966.02

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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.