Home / 20,269.88-27,969.10-11,315.94

Finding the Fourth Proportional to 20,269.88, 27,969.10 and 11,315.94

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Solution

The fourth proportional to 20,269.88, 27,969.10 and 11,315.94 is: 15,614.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.88 : 27,969.10 = 11,315.94 : x
  2. Step 2: Convert to fraction form
    20,269.88/27,969.10 = 11,315.94/x
  3. Step 3: Cross multiply
    20,269.88x = 27,969.10 × 11,315.94
  4. Step 4: Simplify right side
    20,269.88x = 316,496,524.28
  5. Step 5: Solve for x
    x = 316,496,524.28/20,269.88
  6. Step 6: Final answer
    x = 15,614.13

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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.