Home / 21,730.41-29,992.64-13,235.33

Finding the Fourth Proportional to 21,730.41, 29,992.64 and 13,235.33

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Solution

The fourth proportional to 21,730.41, 29,992.64 and 13,235.33 is: 18,267.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.41 : 29,992.64 = 13,235.33 : x
  2. Step 2: Convert to fraction form
    21,730.41/29,992.64 = 13,235.33/x
  3. Step 3: Cross multiply
    21,730.41x = 29,992.64 × 13,235.33
  4. Step 4: Simplify right side
    21,730.41x = 396,962,271.83
  5. Step 5: Solve for x
    x = 396,962,271.83/21,730.41
  6. Step 6: Final answer
    x = 18,267.59

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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.