Home / 13,190.60-18,203.13-7,222.31

Finding the Fourth Proportional to 13,190.60, 18,203.13 and 7,222.31

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Solution

The fourth proportional to 13,190.60, 18,203.13 and 7,222.31 is: 9,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.60 : 18,203.13 = 7,222.31 : x
  2. Step 2: Convert to fraction form
    13,190.60/18,203.13 = 7,222.31/x
  3. Step 3: Cross multiply
    13,190.60x = 18,203.13 × 7,222.31
  4. Step 4: Simplify right side
    13,190.60x = 131,468,727.47
  5. Step 5: Solve for x
    x = 131,468,727.47/13,190.60
  6. Step 6: Final answer
    x = 9,966.85

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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.