Home / 23,128.75-31,917.62-12,518.38

Finding the Fourth Proportional to 23,128.75, 31,917.62 and 12,518.38

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Solution

The fourth proportional to 23,128.75, 31,917.62 and 12,518.38 is: 17,275.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.75 : 31,917.62 = 12,518.38 : x
  2. Step 2: Convert to fraction form
    23,128.75/31,917.62 = 12,518.38/x
  3. Step 3: Cross multiply
    23,128.75x = 31,917.62 × 12,518.38
  4. Step 4: Simplify right side
    23,128.75x = 399,556,833.26
  5. Step 5: Solve for x
    x = 399,556,833.26/23,128.75
  6. Step 6: Final answer
    x = 17,275.33

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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.