Home / 28,725.24-39,640.27-15,977.99

Finding the Fourth Proportional to 28,725.24, 39,640.27 and 15,977.99

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Solution

The fourth proportional to 28,725.24, 39,640.27 and 15,977.99 is: 22,049.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.24 : 39,640.27 = 15,977.99 : x
  2. Step 2: Convert to fraction form
    28,725.24/39,640.27 = 15,977.99/x
  3. Step 3: Cross multiply
    28,725.24x = 39,640.27 × 15,977.99
  4. Step 4: Simplify right side
    28,725.24x = 633,371,837.66
  5. Step 5: Solve for x
    x = 633,371,837.66/28,725.24
  6. Step 6: Final answer
    x = 22,049.31

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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.