Home / 21,732.11-29,989.27-13,346.99

Finding the Fourth Proportional to 21,732.11, 29,989.27 and 13,346.99

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Solution

The fourth proportional to 21,732.11, 29,989.27 and 13,346.99 is: 18,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,732.11 : 29,989.27 = 13,346.99 : x
  2. Step 2: Convert to fraction form
    21,732.11/29,989.27 = 13,346.99/x
  3. Step 3: Cross multiply
    21,732.11x = 29,989.27 × 13,346.99
  4. Step 4: Simplify right side
    21,732.11x = 400,266,486.80
  5. Step 5: Solve for x
    x = 400,266,486.80/21,732.11
  6. Step 6: Final answer
    x = 18,418.21

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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.