Home / 11,688.48-16,129.68-6,383.20

Finding the Fourth Proportional to 11,688.48, 16,129.68 and 6,383.20

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Solution

The fourth proportional to 11,688.48, 16,129.68 and 6,383.20 is: 8,808.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.48 : 16,129.68 = 6,383.20 : x
  2. Step 2: Convert to fraction form
    11,688.48/16,129.68 = 6,383.20/x
  3. Step 3: Cross multiply
    11,688.48x = 16,129.68 × 6,383.20
  4. Step 4: Simplify right side
    11,688.48x = 102,958,973.38
  5. Step 5: Solve for x
    x = 102,958,973.38/11,688.48
  6. Step 6: Final answer
    x = 8,808.59

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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.