Home / 15,462.82-21,338.60-8,389.09

Finding the Fourth Proportional to 15,462.82, 21,338.60 and 8,389.09

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Solution

The fourth proportional to 15,462.82, 21,338.60 and 8,389.09 is: 11,576.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.82 : 21,338.60 = 8,389.09 : x
  2. Step 2: Convert to fraction form
    15,462.82/21,338.60 = 8,389.09/x
  3. Step 3: Cross multiply
    15,462.82x = 21,338.60 × 8,389.09
  4. Step 4: Simplify right side
    15,462.82x = 179,011,435.87
  5. Step 5: Solve for x
    x = 179,011,435.87/15,462.82
  6. Step 6: Final answer
    x = 11,576.89

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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.