Home / 30,825.15-42,538.66-16,678

Finding the Fourth Proportional to 30,825.15, 42,538.66 and 16,678

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Solution

The fourth proportional to 30,825.15, 42,538.66 and 16,678 is: 23,015.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.15 : 42,538.66 = 16,678 : x
  2. Step 2: Convert to fraction form
    30,825.15/42,538.66 = 16,678/x
  3. Step 3: Cross multiply
    30,825.15x = 42,538.66 × 16,678
  4. Step 4: Simplify right side
    30,825.15x = 709,459,771.48
  5. Step 5: Solve for x
    x = 709,459,771.48/30,825.15
  6. Step 6: Final answer
    x = 23,015.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.