Home / 28,485.98-39,310.44-15,740

Finding the Fourth Proportional to 28,485.98, 39,310.44 and 15,740

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Solution

The fourth proportional to 28,485.98, 39,310.44 and 15,740 is: 21,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.98 : 39,310.44 = 15,740 : x
  2. Step 2: Convert to fraction form
    28,485.98/39,310.44 = 15,740/x
  3. Step 3: Cross multiply
    28,485.98x = 39,310.44 × 15,740
  4. Step 4: Simplify right side
    28,485.98x = 618,746,325.60
  5. Step 5: Solve for x
    x = 618,746,325.60/28,485.98
  6. Step 6: Final answer
    x = 21,721.08

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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.