Home / 21,162.09-29,206.92-13,508.67

Finding the Fourth Proportional to 21,162.09, 29,206.92 and 13,508.67

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Solution

The fourth proportional to 21,162.09, 29,206.92 and 13,508.67 is: 18,644.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.09 : 29,206.92 = 13,508.67 : x
  2. Step 2: Convert to fraction form
    21,162.09/29,206.92 = 13,508.67/x
  3. Step 3: Cross multiply
    21,162.09x = 29,206.92 × 13,508.67
  4. Step 4: Simplify right side
    21,162.09x = 394,546,644.00
  5. Step 5: Solve for x
    x = 394,546,644.00/21,162.09
  6. Step 6: Final answer
    x = 18,644.03

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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.