Home / 28,919.41-43,379.10-8,142.91

Finding the Fourth Proportional to 28,919.41, 43,379.10 and 8,142.91

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Solution

The fourth proportional to 28,919.41, 43,379.10 and 8,142.91 is: 12,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.41 : 43,379.10 = 8,142.91 : x
  2. Step 2: Convert to fraction form
    28,919.41/43,379.10 = 8,142.91/x
  3. Step 3: Cross multiply
    28,919.41x = 43,379.10 × 8,142.91
  4. Step 4: Simplify right side
    28,919.41x = 353,232,107.18
  5. Step 5: Solve for x
    x = 353,232,107.18/28,919.41
  6. Step 6: Final answer
    x = 12,214.36

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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.