Home / 28,396.62-39,185.91-15,818.94

Finding the Fourth Proportional to 28,396.62, 39,185.91 and 15,818.94

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Solution

The fourth proportional to 28,396.62, 39,185.91 and 15,818.94 is: 21,829.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396.62 : 39,185.91 = 15,818.94 : x
  2. Step 2: Convert to fraction form
    28,396.62/39,185.91 = 15,818.94/x
  3. Step 3: Cross multiply
    28,396.62x = 39,185.91 × 15,818.94
  4. Step 4: Simplify right side
    28,396.62x = 619,879,559.14
  5. Step 5: Solve for x
    x = 619,879,559.14/28,396.62
  6. Step 6: Final answer
    x = 21,829.34

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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.