Home / 28,898.12-43,348.80-8,120

Finding the Fourth Proportional to 28,898.12, 43,348.80 and 8,120

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Solution

The fourth proportional to 28,898.12, 43,348.80 and 8,120 is: 12,180.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.12 : 43,348.80 = 8,120 : x
  2. Step 2: Convert to fraction form
    28,898.12/43,348.80 = 8,120/x
  3. Step 3: Cross multiply
    28,898.12x = 43,348.80 × 8,120
  4. Step 4: Simplify right side
    28,898.12x = 351,992,256
  5. Step 5: Solve for x
    x = 351,992,256/28,898.12
  6. Step 6: Final answer
    x = 12,180.46

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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.