Home / 28,890.90-43,336.35-8,114.40

Finding the Fourth Proportional to 28,890.90, 43,336.35 and 8,114.40

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Solution

The fourth proportional to 28,890.90, 43,336.35 and 8,114.40 is: 12,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.90 : 43,336.35 = 8,114.40 : x
  2. Step 2: Convert to fraction form
    28,890.90/43,336.35 = 8,114.40/x
  3. Step 3: Cross multiply
    28,890.90x = 43,336.35 × 8,114.40
  4. Step 4: Simplify right side
    28,890.90x = 351,648,478.44
  5. Step 5: Solve for x
    x = 351,648,478.44/28,890.90
  6. Step 6: Final answer
    x = 12,171.60

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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.