Home / 15,383.58-21,229.35-8,310

Finding the Fourth Proportional to 15,383.58, 21,229.35 and 8,310

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Solution

The fourth proportional to 15,383.58, 21,229.35 and 8,310 is: 11,467.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.58 : 21,229.35 = 8,310 : x
  2. Step 2: Convert to fraction form
    15,383.58/21,229.35 = 8,310/x
  3. Step 3: Cross multiply
    15,383.58x = 21,229.35 × 8,310
  4. Step 4: Simplify right side
    15,383.58x = 176,415,898.50
  5. Step 5: Solve for x
    x = 176,415,898.50/15,383.58
  6. Step 6: Final answer
    x = 11,467.81

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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.