Home / 21,208.73-31,814.77-5,626.36

Finding the Fourth Proportional to 21,208.73, 31,814.77 and 5,626.36

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Solution

The fourth proportional to 21,208.73, 31,814.77 and 5,626.36 is: 8,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.73 : 31,814.77 = 5,626.36 : x
  2. Step 2: Convert to fraction form
    21,208.73/31,814.77 = 5,626.36/x
  3. Step 3: Cross multiply
    21,208.73x = 31,814.77 × 5,626.36
  4. Step 4: Simplify right side
    21,208.73x = 179,001,349.34
  5. Step 5: Solve for x
    x = 179,001,349.34/21,208.73
  6. Step 6: Final answer
    x = 8,439.98

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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.