Home / 21,614.56-29,808.24-13,642.96

Finding the Fourth Proportional to 21,614.56, 29,808.24 and 13,642.96

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Solution

The fourth proportional to 21,614.56, 29,808.24 and 13,642.96 is: 18,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.56 : 29,808.24 = 13,642.96 : x
  2. Step 2: Convert to fraction form
    21,614.56/29,808.24 = 13,642.96/x
  3. Step 3: Cross multiply
    21,614.56x = 29,808.24 × 13,642.96
  4. Step 4: Simplify right side
    21,614.56x = 406,672,625.99
  5. Step 5: Solve for x
    x = 406,672,625.99/21,614.56
  6. Step 6: Final answer
    x = 18,814.75

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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.