Home / 28,396.78-39,188.41-15,650.82

Finding the Fourth Proportional to 28,396.78, 39,188.41 and 15,650.82

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Solution

The fourth proportional to 28,396.78, 39,188.41 and 15,650.82 is: 21,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396.78 : 39,188.41 = 15,650.82 : x
  2. Step 2: Convert to fraction form
    28,396.78/39,188.41 = 15,650.82/x
  3. Step 3: Cross multiply
    28,396.78x = 39,188.41 × 15,650.82
  4. Step 4: Simplify right side
    28,396.78x = 613,330,711.87
  5. Step 5: Solve for x
    x = 613,330,711.87/28,396.78
  6. Step 6: Final answer
    x = 21,598.60

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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.