Home / 21,558.08-29,751.71-11,998.73

Finding the Fourth Proportional to 21,558.08, 29,751.71 and 11,998.73

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Solution

The fourth proportional to 21,558.08, 29,751.71 and 11,998.73 is: 16,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.08 : 29,751.71 = 11,998.73 : x
  2. Step 2: Convert to fraction form
    21,558.08/29,751.71 = 11,998.73/x
  3. Step 3: Cross multiply
    21,558.08x = 29,751.71 × 11,998.73
  4. Step 4: Simplify right side
    21,558.08x = 356,982,749.71
  5. Step 5: Solve for x
    x = 356,982,749.71/21,558.08
  6. Step 6: Final answer
    x = 16,559.11

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Double scale
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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.