Home / 30,815.66-42,525.61-16,668.50

Finding the Fourth Proportional to 30,815.66, 42,525.61 and 16,668.50

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Solution

The fourth proportional to 30,815.66, 42,525.61 and 16,668.50 is: 23,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.66 : 42,525.61 = 16,668.50 : x
  2. Step 2: Convert to fraction form
    30,815.66/42,525.61 = 16,668.50/x
  3. Step 3: Cross multiply
    30,815.66x = 42,525.61 × 16,668.50
  4. Step 4: Simplify right side
    30,815.66x = 708,838,194.93
  5. Step 5: Solve for x
    x = 708,838,194.93/30,815.66
  6. Step 6: Final answer
    x = 23,002.54

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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.