Home / 23,121.59-31,907.94-12,511.20

Finding the Fourth Proportional to 23,121.59, 31,907.94 and 12,511.20

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Solution

The fourth proportional to 23,121.59, 31,907.94 and 12,511.20 is: 17,265.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.59 : 31,907.94 = 12,511.20 : x
  2. Step 2: Convert to fraction form
    23,121.59/31,907.94 = 12,511.20/x
  3. Step 3: Cross multiply
    23,121.59x = 31,907.94 × 12,511.20
  4. Step 4: Simplify right side
    23,121.59x = 399,206,618.93
  5. Step 5: Solve for x
    x = 399,206,618.93/23,121.59
  6. Step 6: Final answer
    x = 17,265.53

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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.