Home / 28,477.12-39,297-15,899.44

Finding the Fourth Proportional to 28,477.12, 39,297 and 15,899.44

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Solution

The fourth proportional to 28,477.12, 39,297 and 15,899.44 is: 21,940.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,477.12 : 39,297 = 15,899.44 : x
  2. Step 2: Convert to fraction form
    28,477.12/39,297 = 15,899.44/x
  3. Step 3: Cross multiply
    28,477.12x = 39,297 × 15,899.44
  4. Step 4: Simplify right side
    28,477.12x = 624,800,293.68
  5. Step 5: Solve for x
    x = 624,800,293.68/28,477.12
  6. Step 6: Final answer
    x = 21,940.43

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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.