Home / 21,160.92-29,203.89-12,211.39

Finding the Fourth Proportional to 21,160.92, 29,203.89 and 12,211.39

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Solution

The fourth proportional to 21,160.92, 29,203.89 and 12,211.39 is: 16,852.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.92 : 29,203.89 = 12,211.39 : x
  2. Step 2: Convert to fraction form
    21,160.92/29,203.89 = 12,211.39/x
  3. Step 3: Cross multiply
    21,160.92x = 29,203.89 × 12,211.39
  4. Step 4: Simplify right side
    21,160.92x = 356,619,944.29
  5. Step 5: Solve for x
    x = 356,619,944.29/21,160.92
  6. Step 6: Final answer
    x = 16,852.76

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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.