Home / 13,975.09-19,272.39-8,940.90

Finding the Fourth Proportional to 13,975.09, 19,272.39 and 8,940.90

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Solution

The fourth proportional to 13,975.09, 19,272.39 and 8,940.90 is: 12,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.09 : 19,272.39 = 8,940.90 : x
  2. Step 2: Convert to fraction form
    13,975.09/19,272.39 = 8,940.90/x
  3. Step 3: Cross multiply
    13,975.09x = 19,272.39 × 8,940.90
  4. Step 4: Simplify right side
    13,975.09x = 172,312,511.75
  5. Step 5: Solve for x
    x = 172,312,511.75/13,975.09
  6. Step 6: Final answer
    x = 12,329.98

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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.