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Finding the Fourth Proportional to 30,907.94, 42,651.48 and 16,760.48

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Solution

The fourth proportional to 30,907.94, 42,651.48 and 16,760.48 is: 23,128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,907.94 : 42,651.48 = 16,760.48 : x
  2. Step 2: Convert to fraction form
    30,907.94/42,651.48 = 16,760.48/x
  3. Step 3: Cross multiply
    30,907.94x = 42,651.48 × 16,760.48
  4. Step 4: Simplify right side
    30,907.94x = 714,859,277.51
  5. Step 5: Solve for x
    x = 714,859,277.51/30,907.94
  6. Step 6: Final answer
    x = 23,128.66

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