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Finding the Fourth Proportional to 38,672.20, 58,000.20 and 18,964.90

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Solution

The fourth proportional to 38,672.20, 58,000.20 and 18,964.90 is: 28,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,672.20 : 58,000.20 = 18,964.90 : x
  2. Step 2: Convert to fraction form
    38,672.20/58,000.20 = 18,964.90/x
  3. Step 3: Cross multiply
    38,672.20x = 58,000.20 × 18,964.90
  4. Step 4: Simplify right side
    38,672.20x = 1,099,967,992.98
  5. Step 5: Solve for x
    x = 1,099,967,992.98/38,672.20
  6. Step 6: Final answer
    x = 28,443.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.