Home / 28,787.60-43,181.40-11,245.13

Finding the Fourth Proportional to 28,787.60, 43,181.40 and 11,245.13

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Solution

The fourth proportional to 28,787.60, 43,181.40 and 11,245.13 is: 16,867.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.60 : 43,181.40 = 11,245.13 : x
  2. Step 2: Convert to fraction form
    28,787.60/43,181.40 = 11,245.13/x
  3. Step 3: Cross multiply
    28,787.60x = 43,181.40 × 11,245.13
  4. Step 4: Simplify right side
    28,787.60x = 485,580,240.68
  5. Step 5: Solve for x
    x = 485,580,240.68/28,787.60
  6. Step 6: Final answer
    x = 16,867.69

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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.