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Finding the Fourth Proportional to 14,384.57, 21,580.11 and 5,621.99

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Solution

The fourth proportional to 14,384.57, 21,580.11 and 5,621.99 is: 8,434.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,384.57 : 21,580.11 = 5,621.99 : x
  2. Step 2: Convert to fraction form
    14,384.57/21,580.11 = 5,621.99/x
  3. Step 3: Cross multiply
    14,384.57x = 21,580.11 × 5,621.99
  4. Step 4: Simplify right side
    14,384.57x = 121,323,162.62
  5. Step 5: Solve for x
    x = 121,323,162.62/14,384.57
  6. Step 6: Final answer
    x = 8,434.26

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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.