Home / 14,156.28-21,110.82-12,409.38

Finding the Fourth Proportional to 14,156.28, 21,110.82 and 12,409.38

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Solution

The fourth proportional to 14,156.28, 21,110.82 and 12,409.38 is: 18,505.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,156.28 : 21,110.82 = 12,409.38 : x
  2. Step 2: Convert to fraction form
    14,156.28/21,110.82 = 12,409.38/x
  3. Step 3: Cross multiply
    14,156.28x = 21,110.82 × 12,409.38
  4. Step 4: Simplify right side
    14,156.28x = 261,972,187.49
  5. Step 5: Solve for x
    x = 261,972,187.49/14,156.28
  6. Step 6: Final answer
    x = 18,505.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.