Home / 20,634.43-28,476.19-11,681.74

Finding the Fourth Proportional to 20,634.43, 28,476.19 and 11,681.74

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Solution

The fourth proportional to 20,634.43, 28,476.19 and 11,681.74 is: 16,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.43 : 28,476.19 = 11,681.74 : x
  2. Step 2: Convert to fraction form
    20,634.43/28,476.19 = 11,681.74/x
  3. Step 3: Cross multiply
    20,634.43x = 28,476.19 × 11,681.74
  4. Step 4: Simplify right side
    20,634.43x = 332,651,447.77
  5. Step 5: Solve for x
    x = 332,651,447.77/20,634.43
  6. Step 6: Final answer
    x = 16,121.18

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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.