Home / 28,787.58-43,187.22-12,147.60

Finding the Fourth Proportional to 28,787.58, 43,187.22 and 12,147.60

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Solution

The fourth proportional to 28,787.58, 43,187.22 and 12,147.60 is: 18,223.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.58 : 43,187.22 = 12,147.60 : x
  2. Step 2: Convert to fraction form
    28,787.58/43,187.22 = 12,147.60/x
  3. Step 3: Cross multiply
    28,787.58x = 43,187.22 × 12,147.60
  4. Step 4: Simplify right side
    28,787.58x = 524,621,073.67
  5. Step 5: Solve for x
    x = 524,621,073.67/28,787.58
  6. Step 6: Final answer
    x = 18,223.87

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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.