Home / 21,135.82-29,108.58-16,338.08

Finding the Fourth Proportional to 21,135.82, 29,108.58 and 16,338.08

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Solution

The fourth proportional to 21,135.82, 29,108.58 and 16,338.08 is: 22,501.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.82 : 29,108.58 = 16,338.08 : x
  2. Step 2: Convert to fraction form
    21,135.82/29,108.58 = 16,338.08/x
  3. Step 3: Cross multiply
    21,135.82x = 29,108.58 × 16,338.08
  4. Step 4: Simplify right side
    21,135.82x = 475,578,308.73
  5. Step 5: Solve for x
    x = 475,578,308.73/21,135.82
  6. Step 6: Final answer
    x = 22,501.06

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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.