Home / 30,207.78-41,687.88-16,780.02

Finding the Fourth Proportional to 30,207.78, 41,687.88 and 16,780.02

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Solution

The fourth proportional to 30,207.78, 41,687.88 and 16,780.02 is: 23,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.78 : 41,687.88 = 16,780.02 : x
  2. Step 2: Convert to fraction form
    30,207.78/41,687.88 = 16,780.02/x
  3. Step 3: Cross multiply
    30,207.78x = 41,687.88 × 16,780.02
  4. Step 4: Simplify right side
    30,207.78x = 699,523,460.16
  5. Step 5: Solve for x
    x = 699,523,460.16/30,207.78
  6. Step 6: Final answer
    x = 23,157.06

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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.