Home / 21,135.28-29,166.33-11,703.64

Finding the Fourth Proportional to 21,135.28, 29,166.33 and 11,703.64

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Solution

The fourth proportional to 21,135.28, 29,166.33 and 11,703.64 is: 16,150.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.28 : 29,166.33 = 11,703.64 : x
  2. Step 2: Convert to fraction form
    21,135.28/29,166.33 = 11,703.64/x
  3. Step 3: Cross multiply
    21,135.28x = 29,166.33 × 11,703.64
  4. Step 4: Simplify right side
    21,135.28x = 341,352,226.44
  5. Step 5: Solve for x
    x = 341,352,226.44/21,135.28
  6. Step 6: Final answer
    x = 16,150.83

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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.