Home / 30,520.26-42,121.85-18,582.89

Finding the Fourth Proportional to 30,520.26, 42,121.85 and 18,582.89

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Solution

The fourth proportional to 30,520.26, 42,121.85 and 18,582.89 is: 25,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.26 : 42,121.85 = 18,582.89 : x
  2. Step 2: Convert to fraction form
    30,520.26/42,121.85 = 18,582.89/x
  3. Step 3: Cross multiply
    30,520.26x = 42,121.85 × 18,582.89
  4. Step 4: Simplify right side
    30,520.26x = 782,745,401.62
  5. Step 5: Solve for x
    x = 782,745,401.62/30,520.26
  6. Step 6: Final answer
    x = 25,646.75

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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.