Home / 21,178.10-29,225.92-11,747.26

Finding the Fourth Proportional to 21,178.10, 29,225.92 and 11,747.26

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Solution

The fourth proportional to 21,178.10, 29,225.92 and 11,747.26 is: 16,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.10 : 29,225.92 = 11,747.26 : x
  2. Step 2: Convert to fraction form
    21,178.10/29,225.92 = 11,747.26/x
  3. Step 3: Cross multiply
    21,178.10x = 29,225.92 × 11,747.26
  4. Step 4: Simplify right side
    21,178.10x = 343,324,480.98
  5. Step 5: Solve for x
    x = 343,324,480.98/21,178.10
  6. Step 6: Final answer
    x = 16,211.30

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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.