Home / 20,998.12-28,977.06-11,567.56

Finding the Fourth Proportional to 20,998.12, 28,977.06 and 11,567.56

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Solution

The fourth proportional to 20,998.12, 28,977.06 and 11,567.56 is: 15,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.12 : 28,977.06 = 11,567.56 : x
  2. Step 2: Convert to fraction form
    20,998.12/28,977.06 = 11,567.56/x
  3. Step 3: Cross multiply
    20,998.12x = 28,977.06 × 11,567.56
  4. Step 4: Simplify right side
    20,998.12x = 335,193,880.17
  5. Step 5: Solve for x
    x = 335,193,880.17/20,998.12
  6. Step 6: Final answer
    x = 15,963.04

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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.