Home / 14,400-21,583.68-5,631.36

Finding the Fourth Proportional to 14,400, 21,583.68 and 5,631.36

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Solution

The fourth proportional to 14,400, 21,583.68 and 5,631.36 is: 8,440.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400 : 21,583.68 = 5,631.36 : x
  2. Step 2: Convert to fraction form
    14,400/21,583.68 = 5,631.36/x
  3. Step 3: Cross multiply
    14,400x = 21,583.68 × 5,631.36
  4. Step 4: Simplify right side
    14,400x = 121,545,472.20
  5. Step 5: Solve for x
    x = 121,545,472.20/14,400
  6. Step 6: Final answer
    x = 8,440.66

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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.