Home / 30,209.76-41,689.52-16,780.65

Finding the Fourth Proportional to 30,209.76, 41,689.52 and 16,780.65

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Solution

The fourth proportional to 30,209.76, 41,689.52 and 16,780.65 is: 23,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209.76 : 41,689.52 = 16,780.65 : x
  2. Step 2: Convert to fraction form
    30,209.76/41,689.52 = 16,780.65/x
  3. Step 3: Cross multiply
    30,209.76x = 41,689.52 × 16,780.65
  4. Step 4: Simplify right side
    30,209.76x = 699,577,159.88
  5. Step 5: Solve for x
    x = 699,577,159.88/30,209.76
  6. Step 6: Final answer
    x = 23,157.32

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1.5x scale

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.