Home / 28,544-39,390.74-15,971.72

Finding the Fourth Proportional to 28,544, 39,390.74 and 15,971.72

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Solution

The fourth proportional to 28,544, 39,390.74 and 15,971.72 is: 22,040.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544 : 39,390.74 = 15,971.72 : x
  2. Step 2: Convert to fraction form
    28,544/39,390.74 = 15,971.72/x
  3. Step 3: Cross multiply
    28,544x = 39,390.74 × 15,971.72
  4. Step 4: Simplify right side
    28,544x = 629,137,869.87
  5. Step 5: Solve for x
    x = 629,137,869.87/28,544
  6. Step 6: Final answer
    x = 22,040.98

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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.