Home / 21,739.59-29,992.68-13,238.24

Finding the Fourth Proportional to 21,739.59, 29,992.68 and 13,238.24

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Solution

The fourth proportional to 21,739.59, 29,992.68 and 13,238.24 is: 18,263.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.59 : 29,992.68 = 13,238.24 : x
  2. Step 2: Convert to fraction form
    21,739.59/29,992.68 = 13,238.24/x
  3. Step 3: Cross multiply
    21,739.59x = 29,992.68 × 13,238.24
  4. Step 4: Simplify right side
    21,739.59x = 397,050,146.12
  5. Step 5: Solve for x
    x = 397,050,146.12/21,739.59
  6. Step 6: Final answer
    x = 18,263.92

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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.