Home / 30,821.72-42,520.44-18,068.44

Finding the Fourth Proportional to 30,821.72, 42,520.44 and 18,068.44

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Solution

The fourth proportional to 30,821.72, 42,520.44 and 18,068.44 is: 24,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,821.72 : 42,520.44 = 18,068.44 : x
  2. Step 2: Convert to fraction form
    30,821.72/42,520.44 = 18,068.44/x
  3. Step 3: Cross multiply
    30,821.72x = 42,520.44 × 18,068.44
  4. Step 4: Simplify right side
    30,821.72x = 768,278,018.91
  5. Step 5: Solve for x
    x = 768,278,018.91/30,821.72
  6. Step 6: Final answer
    x = 24,926.51

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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.