Home / 13,190.91-18,203.46-7,222.58

Finding the Fourth Proportional to 13,190.91, 18,203.46 and 7,222.58

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Solution

The fourth proportional to 13,190.91, 18,203.46 and 7,222.58 is: 9,967.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.91 : 18,203.46 = 7,222.58 : x
  2. Step 2: Convert to fraction form
    13,190.91/18,203.46 = 7,222.58/x
  3. Step 3: Cross multiply
    13,190.91x = 18,203.46 × 7,222.58
  4. Step 4: Simplify right side
    13,190.91x = 131,475,946.13
  5. Step 5: Solve for x
    x = 131,475,946.13/13,190.91
  6. Step 6: Final answer
    x = 9,967.16

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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.