Home / 13,633.04-18,759.66-11,387.72

Finding the Fourth Proportional to 13,633.04, 18,759.66 and 11,387.72

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Solution

The fourth proportional to 13,633.04, 18,759.66 and 11,387.72 is: 15,670.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.04 : 18,759.66 = 11,387.72 : x
  2. Step 2: Convert to fraction form
    13,633.04/18,759.66 = 11,387.72/x
  3. Step 3: Cross multiply
    13,633.04x = 18,759.66 × 11,387.72
  4. Step 4: Simplify right side
    13,633.04x = 213,629,755.38
  5. Step 5: Solve for x
    x = 213,629,755.38/13,633.04
  6. Step 6: Final answer
    x = 15,670.00

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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.