Home / 13,664.59-18,853.79-9,118.33

Finding the Fourth Proportional to 13,664.59, 18,853.79 and 9,118.33

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Solution

The fourth proportional to 13,664.59, 18,853.79 and 9,118.33 is: 12,581.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.59 : 18,853.79 = 9,118.33 : x
  2. Step 2: Convert to fraction form
    13,664.59/18,853.79 = 9,118.33/x
  3. Step 3: Cross multiply
    13,664.59x = 18,853.79 × 9,118.33
  4. Step 4: Simplify right side
    13,664.59x = 171,914,986.24
  5. Step 5: Solve for x
    x = 171,914,986.24/13,664.59
  6. Step 6: Final answer
    x = 12,581.06

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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.