Home / 30,819.55-42,532.19-18,070.96

Finding the Fourth Proportional to 30,819.55, 42,532.19 and 18,070.96

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Solution

The fourth proportional to 30,819.55, 42,532.19 and 18,070.96 is: 24,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,819.55 : 42,532.19 = 18,070.96 : x
  2. Step 2: Convert to fraction form
    30,819.55/42,532.19 = 18,070.96/x
  3. Step 3: Cross multiply
    30,819.55x = 42,532.19 × 18,070.96
  4. Step 4: Simplify right side
    30,819.55x = 768,597,413.85
  5. Step 5: Solve for x
    x = 768,597,413.85/30,819.55
  6. Step 6: Final answer
    x = 24,938.63

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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.