Home / 28,878.70-43,285.17-12,228.34

Finding the Fourth Proportional to 28,878.70, 43,285.17 and 12,228.34

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Solution

The fourth proportional to 28,878.70, 43,285.17 and 12,228.34 is: 18,328.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.70 : 43,285.17 = 12,228.34 : x
  2. Step 2: Convert to fraction form
    28,878.70/43,285.17 = 12,228.34/x
  3. Step 3: Cross multiply
    28,878.70x = 43,285.17 × 12,228.34
  4. Step 4: Simplify right side
    28,878.70x = 529,305,775.72
  5. Step 5: Solve for x
    x = 529,305,775.72/28,878.70
  6. Step 6: Final answer
    x = 18,328.59

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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.