Home / 21,179.48-29,246.27-13,235.27

Finding the Fourth Proportional to 21,179.48, 29,246.27 and 13,235.27

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Solution

The fourth proportional to 21,179.48, 29,246.27 and 13,235.27 is: 18,276.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.48 : 29,246.27 = 13,235.27 : x
  2. Step 2: Convert to fraction form
    21,179.48/29,246.27 = 13,235.27/x
  3. Step 3: Cross multiply
    21,179.48x = 29,246.27 × 13,235.27
  4. Step 4: Simplify right side
    21,179.48x = 387,082,067.54
  5. Step 5: Solve for x
    x = 387,082,067.54/21,179.48
  6. Step 6: Final answer
    x = 18,276.28

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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.