Home / 21,240.92-29,309.25-12,164.87

Finding the Fourth Proportional to 21,240.92, 29,309.25 and 12,164.87

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Solution

The fourth proportional to 21,240.92, 29,309.25 and 12,164.87 is: 16,785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.92 : 29,309.25 = 12,164.87 : x
  2. Step 2: Convert to fraction form
    21,240.92/29,309.25 = 12,164.87/x
  3. Step 3: Cross multiply
    21,240.92x = 29,309.25 × 12,164.87
  4. Step 4: Simplify right side
    21,240.92x = 356,543,216.05
  5. Step 5: Solve for x
    x = 356,543,216.05/21,240.92
  6. Step 6: Final answer
    x = 16,785.68

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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.