Home / 28,511.24-39,345.44-15,935.98

Finding the Fourth Proportional to 28,511.24, 39,345.44 and 15,935.98

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Solution

The fourth proportional to 28,511.24, 39,345.44 and 15,935.98 is: 21,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.24 : 39,345.44 = 15,935.98 : x
  2. Step 2: Convert to fraction form
    28,511.24/39,345.44 = 15,935.98/x
  3. Step 3: Cross multiply
    28,511.24x = 39,345.44 × 15,935.98
  4. Step 4: Simplify right side
    28,511.24x = 627,008,144.93
  5. Step 5: Solve for x
    x = 627,008,144.93/28,511.24
  6. Step 6: Final answer
    x = 21,991.61

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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.