Home / 13,661.21-18,854.27-7,694.05

Finding the Fourth Proportional to 13,661.21, 18,854.27 and 7,694.05

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Solution

The fourth proportional to 13,661.21, 18,854.27 and 7,694.05 is: 10,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.21 : 18,854.27 = 7,694.05 : x
  2. Step 2: Convert to fraction form
    13,661.21/18,854.27 = 7,694.05/x
  3. Step 3: Cross multiply
    13,661.21x = 18,854.27 × 7,694.05
  4. Step 4: Simplify right side
    13,661.21x = 145,065,696.09
  5. Step 5: Solve for x
    x = 145,065,696.09/13,661.21
  6. Step 6: Final answer
    x = 10,618.80

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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.