Home / 21,050.82-29,049.39-12,665.70

Finding the Fourth Proportional to 21,050.82, 29,049.39 and 12,665.70

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Solution

The fourth proportional to 21,050.82, 29,049.39 and 12,665.70 is: 17,478.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.82 : 29,049.39 = 12,665.70 : x
  2. Step 2: Convert to fraction form
    21,050.82/29,049.39 = 12,665.70/x
  3. Step 3: Cross multiply
    21,050.82x = 29,049.39 × 12,665.70
  4. Step 4: Simplify right side
    21,050.82x = 367,930,858.92
  5. Step 5: Solve for x
    x = 367,930,858.92/21,050.82
  6. Step 6: Final answer
    x = 17,478.22

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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.