Home / 21,105.42-29,125.47-11,673.90

Finding the Fourth Proportional to 21,105.42, 29,125.47 and 11,673.90

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Solution

The fourth proportional to 21,105.42, 29,125.47 and 11,673.90 is: 16,109.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.42 : 29,125.47 = 11,673.90 : x
  2. Step 2: Convert to fraction form
    21,105.42/29,125.47 = 11,673.90/x
  3. Step 3: Cross multiply
    21,105.42x = 29,125.47 × 11,673.90
  4. Step 4: Simplify right side
    21,105.42x = 340,007,824.23
  5. Step 5: Solve for x
    x = 340,007,824.23/21,105.42
  6. Step 6: Final answer
    x = 16,109.98

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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.