Home / 21,406.49-29,540.23-11,846.78

Finding the Fourth Proportional to 21,406.49, 29,540.23 and 11,846.78

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Solution

The fourth proportional to 21,406.49, 29,540.23 and 11,846.78 is: 16,348.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.49 : 29,540.23 = 11,846.78 : x
  2. Step 2: Convert to fraction form
    21,406.49/29,540.23 = 11,846.78/x
  3. Step 3: Cross multiply
    21,406.49x = 29,540.23 × 11,846.78
  4. Step 4: Simplify right side
    21,406.49x = 349,956,502.49
  5. Step 5: Solve for x
    x = 349,956,502.49/21,406.49
  6. Step 6: Final answer
    x = 16,348.15

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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.