Home / 21,632.73-29,850.84-12,678.45

Finding the Fourth Proportional to 21,632.73, 29,850.84 and 12,678.45

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Solution

The fourth proportional to 21,632.73, 29,850.84 and 12,678.45 is: 17,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.73 : 29,850.84 = 12,678.45 : x
  2. Step 2: Convert to fraction form
    21,632.73/29,850.84 = 12,678.45/x
  3. Step 3: Cross multiply
    21,632.73x = 29,850.84 × 12,678.45
  4. Step 4: Simplify right side
    21,632.73x = 378,462,382.40
  5. Step 5: Solve for x
    x = 378,462,382.40/21,632.73
  6. Step 6: Final answer
    x = 17,494.90

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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.