Home / 28,114.12-38,791.20-16,787.62

Finding the Fourth Proportional to 28,114.12, 38,791.20 and 16,787.62

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Solution

The fourth proportional to 28,114.12, 38,791.20 and 16,787.62 is: 23,163.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.12 : 38,791.20 = 16,787.62 : x
  2. Step 2: Convert to fraction form
    28,114.12/38,791.20 = 16,787.62/x
  3. Step 3: Cross multiply
    28,114.12x = 38,791.20 × 16,787.62
  4. Step 4: Simplify right side
    28,114.12x = 651,211,924.94
  5. Step 5: Solve for x
    x = 651,211,924.94/28,114.12
  6. Step 6: Final answer
    x = 23,163.16

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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.