Home / 28,817.98-43,240.32-12,181.88

Finding the Fourth Proportional to 28,817.98, 43,240.32 and 12,181.88

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Solution

The fourth proportional to 28,817.98, 43,240.32 and 12,181.88 is: 18,278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,817.98 : 43,240.32 = 12,181.88 : x
  2. Step 2: Convert to fraction form
    28,817.98/43,240.32 = 12,181.88/x
  3. Step 3: Cross multiply
    28,817.98x = 43,240.32 × 12,181.88
  4. Step 4: Simplify right side
    28,817.98x = 526,748,497.50
  5. Step 5: Solve for x
    x = 526,748,497.50/28,817.98
  6. Step 6: Final answer
    x = 18,278.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.