Home / 13,672.25-18,862.31-8,634.59

Finding the Fourth Proportional to 13,672.25, 18,862.31 and 8,634.59

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Solution

The fourth proportional to 13,672.25, 18,862.31 and 8,634.59 is: 11,912.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.25 : 18,862.31 = 8,634.59 : x
  2. Step 2: Convert to fraction form
    13,672.25/18,862.31 = 8,634.59/x
  3. Step 3: Cross multiply
    13,672.25x = 18,862.31 × 8,634.59
  4. Step 4: Simplify right side
    13,672.25x = 162,868,270.13
  5. Step 5: Solve for x
    x = 162,868,270.13/13,672.25
  6. Step 6: Final answer
    x = 11,912.32

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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.