Home / 21,026.72-31,530.96-11,163.84

Finding the Fourth Proportional to 21,026.72, 31,530.96 and 11,163.84

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Solution

The fourth proportional to 21,026.72, 31,530.96 and 11,163.84 is: 16,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.72 : 31,530.96 = 11,163.84 : x
  2. Step 2: Convert to fraction form
    21,026.72/31,530.96 = 11,163.84/x
  3. Step 3: Cross multiply
    21,026.72x = 31,530.96 × 11,163.84
  4. Step 4: Simplify right side
    21,026.72x = 352,006,592.49
  5. Step 5: Solve for x
    x = 352,006,592.49/21,026.72
  6. Step 6: Final answer
    x = 16,740.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.