Home / 19,991.18-27,586.54-11,491.32

Finding the Fourth Proportional to 19,991.18, 27,586.54 and 11,491.32

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Solution

The fourth proportional to 19,991.18, 27,586.54 and 11,491.32 is: 15,857.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.18 : 27,586.54 = 11,491.32 : x
  2. Step 2: Convert to fraction form
    19,991.18/27,586.54 = 11,491.32/x
  3. Step 3: Cross multiply
    19,991.18x = 27,586.54 × 11,491.32
  4. Step 4: Simplify right side
    19,991.18x = 317,005,758.83
  5. Step 5: Solve for x
    x = 317,005,758.83/19,991.18
  6. Step 6: Final answer
    x = 15,857.28

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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.