Home / 21,345.82-29,451.30-13,792.44

Finding the Fourth Proportional to 21,345.82, 29,451.30 and 13,792.44

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Solution

The fourth proportional to 21,345.82, 29,451.30 and 13,792.44 is: 19,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.82 : 29,451.30 = 13,792.44 : x
  2. Step 2: Convert to fraction form
    21,345.82/29,451.30 = 13,792.44/x
  3. Step 3: Cross multiply
    21,345.82x = 29,451.30 × 13,792.44
  4. Step 4: Simplify right side
    21,345.82x = 406,205,288.17
  5. Step 5: Solve for x
    x = 406,205,288.17/21,345.82
  6. Step 6: Final answer
    x = 19,029.73

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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.