Home / 30,209.86-41,689.05-16,780.58

Finding the Fourth Proportional to 30,209.86, 41,689.05 and 16,780.58

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Solution

The fourth proportional to 30,209.86, 41,689.05 and 16,780.58 is: 23,156.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209.86 : 41,689.05 = 16,780.58 : x
  2. Step 2: Convert to fraction form
    30,209.86/41,689.05 = 16,780.58/x
  3. Step 3: Cross multiply
    30,209.86x = 41,689.05 × 16,780.58
  4. Step 4: Simplify right side
    30,209.86x = 699,566,438.65
  5. Step 5: Solve for x
    x = 699,566,438.65/30,209.86
  6. Step 6: Final answer
    x = 23,156.89

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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.