Home / 20,201.68-27,870.92-12,238.16

Finding the Fourth Proportional to 20,201.68, 27,870.92 and 12,238.16

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Solution

The fourth proportional to 20,201.68, 27,870.92 and 12,238.16 is: 16,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.68 : 27,870.92 = 12,238.16 : x
  2. Step 2: Convert to fraction form
    20,201.68/27,870.92 = 12,238.16/x
  3. Step 3: Cross multiply
    20,201.68x = 27,870.92 × 12,238.16
  4. Step 4: Simplify right side
    20,201.68x = 341,088,778.31
  5. Step 5: Solve for x
    x = 341,088,778.31/20,201.68
  6. Step 6: Final answer
    x = 16,884.18

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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.