Home / 13,629.68-18,801.36-9,380.24

Finding the Fourth Proportional to 13,629.68, 18,801.36 and 9,380.24

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Solution

The fourth proportional to 13,629.68, 18,801.36 and 9,380.24 is: 12,939.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.68 : 18,801.36 = 9,380.24 : x
  2. Step 2: Convert to fraction form
    13,629.68/18,801.36 = 9,380.24/x
  3. Step 3: Cross multiply
    13,629.68x = 18,801.36 × 9,380.24
  4. Step 4: Simplify right side
    13,629.68x = 176,361,269.13
  5. Step 5: Solve for x
    x = 176,361,269.13/13,629.68
  6. Step 6: Final answer
    x = 12,939.50

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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.