Home / 13,201.97-18,218.57-7,152.09

Finding the Fourth Proportional to 13,201.97, 18,218.57 and 7,152.09

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Solution

The fourth proportional to 13,201.97, 18,218.57 and 7,152.09 is: 9,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.97 : 18,218.57 = 7,152.09 : x
  2. Step 2: Convert to fraction form
    13,201.97/18,218.57 = 7,152.09/x
  3. Step 3: Cross multiply
    13,201.97x = 18,218.57 × 7,152.09
  4. Step 4: Simplify right side
    13,201.97x = 130,300,816.55
  5. Step 5: Solve for x
    x = 130,300,816.55/13,201.97
  6. Step 6: Final answer
    x = 9,869.80

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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.