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Finding the Fourth Proportional to 14,296.80, 21,399.12 and 7,361.76

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Solution

The fourth proportional to 14,296.80, 21,399.12 and 7,361.76 is: 11,018.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,296.80 : 21,399.12 = 7,361.76 : x
  2. Step 2: Convert to fraction form
    14,296.80/21,399.12 = 7,361.76/x
  3. Step 3: Cross multiply
    14,296.80x = 21,399.12 × 7,361.76
  4. Step 4: Simplify right side
    14,296.80x = 157,535,185.65
  5. Step 5: Solve for x
    x = 157,535,185.65/14,296.80
  6. Step 6: Final answer
    x = 11,018.91

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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.