Home / 28,392.96-39,181.44-15,817.44

Finding the Fourth Proportional to 28,392.96, 39,181.44 and 15,817.44

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Solution

The fourth proportional to 28,392.96, 39,181.44 and 15,817.44 is: 21,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.96 : 39,181.44 = 15,817.44 : x
  2. Step 2: Convert to fraction form
    28,392.96/39,181.44 = 15,817.44/x
  3. Step 3: Cross multiply
    28,392.96x = 39,181.44 × 15,817.44
  4. Step 4: Simplify right side
    28,392.96x = 619,750,076.31
  5. Step 5: Solve for x
    x = 619,750,076.31/28,392.96
  6. Step 6: Final answer
    x = 21,827.60

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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.