Home / 30,815.80-42,525.66-16,668.52

Finding the Fourth Proportional to 30,815.80, 42,525.66 and 16,668.52

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Solution

The fourth proportional to 30,815.80, 42,525.66 and 16,668.52 is: 23,002.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.80 : 42,525.66 = 16,668.52 : x
  2. Step 2: Convert to fraction form
    30,815.80/42,525.66 = 16,668.52/x
  3. Step 3: Cross multiply
    30,815.80x = 42,525.66 × 16,668.52
  4. Step 4: Simplify right side
    30,815.80x = 708,839,814.22
  5. Step 5: Solve for x
    x = 708,839,814.22/30,815.80
  6. Step 6: Final answer
    x = 23,002.48

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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.