Home / 20,718.43-28,589.29-11,642.35

Finding the Fourth Proportional to 20,718.43, 28,589.29 and 11,642.35

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Solution

The fourth proportional to 20,718.43, 28,589.29 and 11,642.35 is: 16,065.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.43 : 28,589.29 = 11,642.35 : x
  2. Step 2: Convert to fraction form
    20,718.43/28,589.29 = 11,642.35/x
  3. Step 3: Cross multiply
    20,718.43x = 28,589.29 × 11,642.35
  4. Step 4: Simplify right side
    20,718.43x = 332,846,419.85
  5. Step 5: Solve for x
    x = 332,846,419.85/20,718.43
  6. Step 6: Final answer
    x = 16,065.24

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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.