Home / 13,604.90-18,776.12-9,137.97

Finding the Fourth Proportional to 13,604.90, 18,776.12 and 9,137.97

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Solution

The fourth proportional to 13,604.90, 18,776.12 and 9,137.97 is: 12,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.90 : 18,776.12 = 9,137.97 : x
  2. Step 2: Convert to fraction form
    13,604.90/18,776.12 = 9,137.97/x
  3. Step 3: Cross multiply
    13,604.90x = 18,776.12 × 9,137.97
  4. Step 4: Simplify right side
    13,604.90x = 171,575,575.59
  5. Step 5: Solve for x
    x = 171,575,575.59/13,604.90
  6. Step 6: Final answer
    x = 12,611.31

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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.