Home / 20,661.84-28,515.96-11,710.80

Finding the Fourth Proportional to 20,661.84, 28,515.96 and 11,710.80

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Solution

The fourth proportional to 20,661.84, 28,515.96 and 11,710.80 is: 16,162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.84 : 28,515.96 = 11,710.80 : x
  2. Step 2: Convert to fraction form
    20,661.84/28,515.96 = 11,710.80/x
  3. Step 3: Cross multiply
    20,661.84x = 28,515.96 × 11,710.80
  4. Step 4: Simplify right side
    20,661.84x = 333,944,704.37
  5. Step 5: Solve for x
    x = 333,944,704.37/20,661.84
  6. Step 6: Final answer
    x = 16,162.39

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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.