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Finding the Fourth Proportional to 13,673.46, 18,860.81 and 8,359.05

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Solution

The fourth proportional to 13,673.46, 18,860.81 and 8,359.05 is: 11,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.46 : 18,860.81 = 8,359.05 : x
  2. Step 2: Convert to fraction form
    13,673.46/18,860.81 = 8,359.05/x
  3. Step 3: Cross multiply
    13,673.46x = 18,860.81 × 8,359.05
  4. Step 4: Simplify right side
    13,673.46x = 157,658,412.04
  5. Step 5: Solve for x
    x = 157,658,412.04/13,673.46
  6. Step 6: Final answer
    x = 11,530.25

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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.