Home / 28,728.21-39,644.44-15,981.24

Finding the Fourth Proportional to 28,728.21, 39,644.44 and 15,981.24

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Solution

The fourth proportional to 28,728.21, 39,644.44 and 15,981.24 is: 22,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.21 : 39,644.44 = 15,981.24 : x
  2. Step 2: Convert to fraction form
    28,728.21/39,644.44 = 15,981.24/x
  3. Step 3: Cross multiply
    28,728.21x = 39,644.44 × 15,981.24
  4. Step 4: Simplify right side
    28,728.21x = 633,567,310.31
  5. Step 5: Solve for x
    x = 633,567,310.31/28,728.21
  6. Step 6: Final answer
    x = 22,053.84

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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.