Home / 20,568.12-28,385.04-11,616

Finding the Fourth Proportional to 20,568.12, 28,385.04 and 11,616

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Solution

The fourth proportional to 20,568.12, 28,385.04 and 11,616 is: 16,030.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.12 : 28,385.04 = 11,616 : x
  2. Step 2: Convert to fraction form
    20,568.12/28,385.04 = 11,616/x
  3. Step 3: Cross multiply
    20,568.12x = 28,385.04 × 11,616
  4. Step 4: Simplify right side
    20,568.12x = 329,720,624.64
  5. Step 5: Solve for x
    x = 329,720,624.64/20,568.12
  6. Step 6: Final answer
    x = 16,030.66

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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.