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Finding the Fourth Proportional to 14,098.80, 21,141.80 and 5,330.80

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Solution

The fourth proportional to 14,098.80, 21,141.80 and 5,330.80 is: 7,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,098.80 : 21,141.80 = 5,330.80 : x
  2. Step 2: Convert to fraction form
    14,098.80/21,141.80 = 5,330.80/x
  3. Step 3: Cross multiply
    14,098.80x = 21,141.80 × 5,330.80
  4. Step 4: Simplify right side
    14,098.80x = 112,702,707.44
  5. Step 5: Solve for x
    x = 112,702,707.44/14,098.80
  6. Step 6: Final answer
    x = 7,993.78

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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.