Home / 11,688.30-16,129.80-6,383.34

Finding the Fourth Proportional to 11,688.30, 16,129.80 and 6,383.34

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Solution

The fourth proportional to 11,688.30, 16,129.80 and 6,383.34 is: 8,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.30 : 16,129.80 = 6,383.34 : x
  2. Step 2: Convert to fraction form
    11,688.30/16,129.80 = 6,383.34/x
  3. Step 3: Cross multiply
    11,688.30x = 16,129.80 × 6,383.34
  4. Step 4: Simplify right side
    11,688.30x = 102,961,997.53
  5. Step 5: Solve for x
    x = 102,961,997.53/11,688.30
  6. Step 6: Final answer
    x = 8,808.98

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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.