Home / 28,878.42-43,319.16-8,103.54

Finding the Fourth Proportional to 28,878.42, 43,319.16 and 8,103.54

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Solution

The fourth proportional to 28,878.42, 43,319.16 and 8,103.54 is: 12,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.42 : 43,319.16 = 8,103.54 : x
  2. Step 2: Convert to fraction form
    28,878.42/43,319.16 = 8,103.54/x
  3. Step 3: Cross multiply
    28,878.42x = 43,319.16 × 8,103.54
  4. Step 4: Simplify right side
    28,878.42x = 351,038,545.83
  5. Step 5: Solve for x
    x = 351,038,545.83/28,878.42
  6. Step 6: Final answer
    x = 12,155.74

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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.