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Finding the Fourth Proportional to 13,643.33, 18,826.78 and 7,673.84

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Solution

The fourth proportional to 13,643.33, 18,826.78 and 7,673.84 is: 10,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.33 : 18,826.78 = 7,673.84 : x
  2. Step 2: Convert to fraction form
    13,643.33/18,826.78 = 7,673.84/x
  3. Step 3: Cross multiply
    13,643.33x = 18,826.78 × 7,673.84
  4. Step 4: Simplify right side
    13,643.33x = 144,473,725.32
  5. Step 5: Solve for x
    x = 144,473,725.32/13,643.33
  6. Step 6: Final answer
    x = 10,589.33

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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.