Home / 21,730.03-29,992.12-13,234.95

Finding the Fourth Proportional to 21,730.03, 29,992.12 and 13,234.95

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Solution

The fourth proportional to 21,730.03, 29,992.12 and 13,234.95 is: 18,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.03 : 29,992.12 = 13,234.95 : x
  2. Step 2: Convert to fraction form
    21,730.03/29,992.12 = 13,234.95/x
  3. Step 3: Cross multiply
    21,730.03x = 29,992.12 × 13,234.95
  4. Step 4: Simplify right side
    21,730.03x = 396,944,175.51
  5. Step 5: Solve for x
    x = 396,944,175.51/21,730.03
  6. Step 6: Final answer
    x = 18,267.08

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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.