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Finding the Fourth Proportional to 14,650, 20,219.60 and 14,163.92

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Solution

The fourth proportional to 14,650, 20,219.60 and 14,163.92 is: 19,548.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,650 : 20,219.60 = 14,163.92 : x
  2. Step 2: Convert to fraction form
    14,650/20,219.60 = 14,163.92/x
  3. Step 3: Cross multiply
    14,650x = 20,219.60 × 14,163.92
  4. Step 4: Simplify right side
    14,650x = 286,388,796.83
  5. Step 5: Solve for x
    x = 286,388,796.83/14,650
  6. Step 6: Final answer
    x = 19,548.72

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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.