Home / 30,905.73-42,649.69-16,758.57

Finding the Fourth Proportional to 30,905.73, 42,649.69 and 16,758.57

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Solution

The fourth proportional to 30,905.73, 42,649.69 and 16,758.57 is: 23,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.73 : 42,649.69 = 16,758.57 : x
  2. Step 2: Convert to fraction form
    30,905.73/42,649.69 = 16,758.57/x
  3. Step 3: Cross multiply
    30,905.73x = 42,649.69 × 16,758.57
  4. Step 4: Simplify right side
    30,905.73x = 714,747,844.85
  5. Step 5: Solve for x
    x = 714,747,844.85/30,905.73
  6. Step 6: Final answer
    x = 23,126.71

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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.