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Finding the Fourth Proportional to 20,477.57, 30,690.41 and 9,950.00

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Solution

The fourth proportional to 20,477.57, 30,690.41 and 9,950.00 is: 14,912.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.57 : 30,690.41 = 9,950.00 : x
  2. Step 2: Convert to fraction form
    20,477.57/30,690.41 = 9,950.00/x
  3. Step 3: Cross multiply
    20,477.57x = 30,690.41 × 9,950.00
  4. Step 4: Simplify right side
    20,477.57x = 305,369,376.30
  5. Step 5: Solve for x
    x = 305,369,376.30/20,477.57
  6. Step 6: Final answer
    x = 14,912.39

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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.