Home / 20,088.30-27,723.03-12,131.71

Finding the Fourth Proportional to 20,088.30, 27,723.03 and 12,131.71

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Solution

The fourth proportional to 20,088.30, 27,723.03 and 12,131.71 is: 16,742.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.30 : 27,723.03 = 12,131.71 : x
  2. Step 2: Convert to fraction form
    20,088.30/27,723.03 = 12,131.71/x
  3. Step 3: Cross multiply
    20,088.30x = 27,723.03 × 12,131.71
  4. Step 4: Simplify right side
    20,088.30x = 336,327,645.48
  5. Step 5: Solve for x
    x = 336,327,645.48/20,088.30
  6. Step 6: Final answer
    x = 16,742.46

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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.