Home / 20,184.39-27,867.24-13,130.91

Finding the Fourth Proportional to 20,184.39, 27,867.24 and 13,130.91

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Solution

The fourth proportional to 20,184.39, 27,867.24 and 13,130.91 is: 18,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,184.39 : 27,867.24 = 13,130.91 : x
  2. Step 2: Convert to fraction form
    20,184.39/27,867.24 = 13,130.91/x
  3. Step 3: Cross multiply
    20,184.39x = 27,867.24 × 13,130.91
  4. Step 4: Simplify right side
    20,184.39x = 365,922,220.39
  5. Step 5: Solve for x
    x = 365,922,220.39/20,184.39
  6. Step 6: Final answer
    x = 18,128.97

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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.