Home / 28,878.20-43,321.64-12,238.32

Finding the Fourth Proportional to 28,878.20, 43,321.64 and 12,238.32

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Solution

The fourth proportional to 28,878.20, 43,321.64 and 12,238.32 is: 18,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.20 : 43,321.64 = 12,238.32 : x
  2. Step 2: Convert to fraction form
    28,878.20/43,321.64 = 12,238.32/x
  3. Step 3: Cross multiply
    28,878.20x = 43,321.64 × 12,238.32
  4. Step 4: Simplify right side
    28,878.20x = 530,184,093.24
  5. Step 5: Solve for x
    x = 530,184,093.24/28,878.20
  6. Step 6: Final answer
    x = 18,359.32

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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.