Home / 21,739.15-29,992.83-15,022.36

Finding the Fourth Proportional to 21,739.15, 29,992.83 and 15,022.36

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Solution

The fourth proportional to 21,739.15, 29,992.83 and 15,022.36 is: 20,725.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.15 : 29,992.83 = 15,022.36 : x
  2. Step 2: Convert to fraction form
    21,739.15/29,992.83 = 15,022.36/x
  3. Step 3: Cross multiply
    21,739.15x = 29,992.83 × 15,022.36
  4. Step 4: Simplify right side
    21,739.15x = 450,562,939.71
  5. Step 5: Solve for x
    x = 450,562,939.71/21,739.15
  6. Step 6: Final answer
    x = 20,725.88

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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.