Home / 21,471.85-29,628.33-11,911.63

Finding the Fourth Proportional to 21,471.85, 29,628.33 and 11,911.63

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Solution

The fourth proportional to 21,471.85, 29,628.33 and 11,911.63 is: 16,436.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.85 : 29,628.33 = 11,911.63 : x
  2. Step 2: Convert to fraction form
    21,471.85/29,628.33 = 11,911.63/x
  3. Step 3: Cross multiply
    21,471.85x = 29,628.33 × 11,911.63
  4. Step 4: Simplify right side
    21,471.85x = 352,921,704.48
  5. Step 5: Solve for x
    x = 352,921,704.48/21,471.85
  6. Step 6: Final answer
    x = 16,436.48

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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.