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Finding the Fourth Proportional to 34,135.40, 51,231.90 and 16,620.20

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Solution

The fourth proportional to 34,135.40, 51,231.90 and 16,620.20 is: 24,944.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,135.40 : 51,231.90 = 16,620.20 : x
  2. Step 2: Convert to fraction form
    34,135.40/51,231.90 = 16,620.20/x
  3. Step 3: Cross multiply
    34,135.40x = 51,231.90 × 16,620.20
  4. Step 4: Simplify right side
    34,135.40x = 851,484,424.38
  5. Step 5: Solve for x
    x = 851,484,424.38/34,135.40
  6. Step 6: Final answer
    x = 24,944.32

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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.