Home / 28,534.08-39,376.33-15,786.97

Finding the Fourth Proportional to 28,534.08, 39,376.33 and 15,786.97

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Solution

The fourth proportional to 28,534.08, 39,376.33 and 15,786.97 is: 21,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534.08 : 39,376.33 = 15,786.97 : x
  2. Step 2: Convert to fraction form
    28,534.08/39,376.33 = 15,786.97/x
  3. Step 3: Cross multiply
    28,534.08x = 39,376.33 × 15,786.97
  4. Step 4: Simplify right side
    28,534.08x = 621,632,940.42
  5. Step 5: Solve for x
    x = 621,632,940.42/28,534.08
  6. Step 6: Final answer
    x = 21,785.63

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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.