Home / 28,533.92-39,377.99-15,786.90

Finding the Fourth Proportional to 28,533.92, 39,377.99 and 15,786.90

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Solution

The fourth proportional to 28,533.92, 39,377.99 and 15,786.90 is: 21,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.92 : 39,377.99 = 15,786.90 : x
  2. Step 2: Convert to fraction form
    28,533.92/39,377.99 = 15,786.90/x
  3. Step 3: Cross multiply
    28,533.92x = 39,377.99 × 15,786.90
  4. Step 4: Simplify right side
    28,533.92x = 621,656,390.33
  5. Step 5: Solve for x
    x = 621,656,390.33/28,533.92
  6. Step 6: Final answer
    x = 21,786.58

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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.