Home / 23,121.86-31,907.94-12,511.26

Finding the Fourth Proportional to 23,121.86, 31,907.94 and 12,511.26

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Solution

The fourth proportional to 23,121.86, 31,907.94 and 12,511.26 is: 17,265.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.86 : 31,907.94 = 12,511.26 : x
  2. Step 2: Convert to fraction form
    23,121.86/31,907.94 = 12,511.26/x
  3. Step 3: Cross multiply
    23,121.86x = 31,907.94 × 12,511.26
  4. Step 4: Simplify right side
    23,121.86x = 399,208,533.40
  5. Step 5: Solve for x
    x = 399,208,533.40/23,121.86
  6. Step 6: Final answer
    x = 17,265.42

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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.