Home / 14,991.58-20,706.75-11,231.56

Finding the Fourth Proportional to 14,991.58, 20,706.75 and 11,231.56

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Solution

The fourth proportional to 14,991.58, 20,706.75 and 11,231.56 is: 15,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.58 : 20,706.75 = 11,231.56 : x
  2. Step 2: Convert to fraction form
    14,991.58/20,706.75 = 11,231.56/x
  3. Step 3: Cross multiply
    14,991.58x = 20,706.75 × 11,231.56
  4. Step 4: Simplify right side
    14,991.58x = 232,569,105.03
  5. Step 5: Solve for x
    x = 232,569,105.03/14,991.58
  6. Step 6: Final answer
    x = 15,513.32

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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.