Home / 23,121.89-31,908.07-13,053.60

Finding the Fourth Proportional to 23,121.89, 31,908.07 and 13,053.60

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Solution

The fourth proportional to 23,121.89, 31,908.07 and 13,053.60 is: 18,013.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.89 : 31,908.07 = 13,053.60 : x
  2. Step 2: Convert to fraction form
    23,121.89/31,908.07 = 13,053.60/x
  3. Step 3: Cross multiply
    23,121.89x = 31,908.07 × 13,053.60
  4. Step 4: Simplify right side
    23,121.89x = 416,515,149.92
  5. Step 5: Solve for x
    x = 416,515,149.92/23,121.89
  6. Step 6: Final answer
    x = 18,013.89

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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.