Home / 21,451.14-29,603.95-11,891.43

Finding the Fourth Proportional to 21,451.14, 29,603.95 and 11,891.43

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Solution

The fourth proportional to 21,451.14, 29,603.95 and 11,891.43 is: 16,410.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.14 : 29,603.95 = 11,891.43 : x
  2. Step 2: Convert to fraction form
    21,451.14/29,603.95 = 11,891.43/x
  3. Step 3: Cross multiply
    21,451.14x = 29,603.95 × 11,891.43
  4. Step 4: Simplify right side
    21,451.14x = 352,033,237.26
  5. Step 5: Solve for x
    x = 352,033,237.26/21,451.14
  6. Step 6: Final answer
    x = 16,410.94

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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.