Home / 28,685.36-39,584.44-15,939.36

Finding the Fourth Proportional to 28,685.36, 39,584.44 and 15,939.36

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Solution

The fourth proportional to 28,685.36, 39,584.44 and 15,939.36 is: 21,995.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.36 : 39,584.44 = 15,939.36 : x
  2. Step 2: Convert to fraction form
    28,685.36/39,584.44 = 15,939.36/x
  3. Step 3: Cross multiply
    28,685.36x = 39,584.44 × 15,939.36
  4. Step 4: Simplify right side
    28,685.36x = 630,950,639.56
  5. Step 5: Solve for x
    x = 630,950,639.56/28,685.36
  6. Step 6: Final answer
    x = 21,995.56

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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.