Home / 19,775-27,288.70-11,821.62

Finding the Fourth Proportional to 19,775, 27,288.70 and 11,821.62

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Solution

The fourth proportional to 19,775, 27,288.70 and 11,821.62 is: 16,313.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775 : 27,288.70 = 11,821.62 : x
  2. Step 2: Convert to fraction form
    19,775/27,288.70 = 11,821.62/x
  3. Step 3: Cross multiply
    19,775x = 27,288.70 × 11,821.62
  4. Step 4: Simplify right side
    19,775x = 322,596,641.69
  5. Step 5: Solve for x
    x = 322,596,641.69/19,775
  6. Step 6: Final answer
    x = 16,313.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.