Home / 23,100.32-31,878.07-13,028.78

Finding the Fourth Proportional to 23,100.32, 31,878.07 and 13,028.78

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Solution

The fourth proportional to 23,100.32, 31,878.07 and 13,028.78 is: 17,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,100.32 : 31,878.07 = 13,028.78 : x
  2. Step 2: Convert to fraction form
    23,100.32/31,878.07 = 13,028.78/x
  3. Step 3: Cross multiply
    23,100.32x = 31,878.07 × 13,028.78
  4. Step 4: Simplify right side
    23,100.32x = 415,332,168.89
  5. Step 5: Solve for x
    x = 415,332,168.89/23,100.32
  6. Step 6: Final answer
    x = 17,979.50

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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.