Home / 21,369.98-29,491.94-11,938.56

Finding the Fourth Proportional to 21,369.98, 29,491.94 and 11,938.56

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Solution

The fourth proportional to 21,369.98, 29,491.94 and 11,938.56 is: 16,475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.98 : 29,491.94 = 11,938.56 : x
  2. Step 2: Convert to fraction form
    21,369.98/29,491.94 = 11,938.56/x
  3. Step 3: Cross multiply
    21,369.98x = 29,491.94 × 11,938.56
  4. Step 4: Simplify right side
    21,369.98x = 352,091,295.21
  5. Step 5: Solve for x
    x = 352,091,295.21/21,369.98
  6. Step 6: Final answer
    x = 16,475.98

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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.