Home / 28,913.15-43,360.43-9,187.09

Finding the Fourth Proportional to 28,913.15, 43,360.43 and 9,187.09

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Solution

The fourth proportional to 28,913.15, 43,360.43 and 9,187.09 is: 13,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.15 : 43,360.43 = 9,187.09 : x
  2. Step 2: Convert to fraction form
    28,913.15/43,360.43 = 9,187.09/x
  3. Step 3: Cross multiply
    28,913.15x = 43,360.43 × 9,187.09
  4. Step 4: Simplify right side
    28,913.15x = 398,356,172.85
  5. Step 5: Solve for x
    x = 398,356,172.85/28,913.15
  6. Step 6: Final answer
    x = 13,777.68

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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.