Home / 13,633.12-18,813.88-7,664.44

Finding the Fourth Proportional to 13,633.12, 18,813.88 and 7,664.44

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Solution

The fourth proportional to 13,633.12, 18,813.88 and 7,664.44 is: 10,577.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.12 : 18,813.88 = 7,664.44 : x
  2. Step 2: Convert to fraction form
    13,633.12/18,813.88 = 7,664.44/x
  3. Step 3: Cross multiply
    13,633.12x = 18,813.88 × 7,664.44
  4. Step 4: Simplify right side
    13,633.12x = 144,197,854.43
  5. Step 5: Solve for x
    x = 144,197,854.43/13,633.12
  6. Step 6: Final answer
    x = 10,577.03

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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.