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Finding the Fourth Proportional to 34,690.80, 52,049.22 and 20,658.90

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Solution

The fourth proportional to 34,690.80, 52,049.22 and 20,658.90 is: 30,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,690.80 : 52,049.22 = 20,658.90 : x
  2. Step 2: Convert to fraction form
    34,690.80/52,049.22 = 20,658.90/x
  3. Step 3: Cross multiply
    34,690.80x = 52,049.22 × 20,658.90
  4. Step 4: Simplify right side
    34,690.80x = 1,075,279,631.06
  5. Step 5: Solve for x
    x = 1,075,279,631.06/34,690.80
  6. Step 6: Final answer
    x = 30,996.10

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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.