Home / 18,120.60-27,145.49-12,484.97

Finding the Fourth Proportional to 18,120.60, 27,145.49 and 12,484.97

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Solution

The fourth proportional to 18,120.60, 27,145.49 and 12,484.97 is: 18,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.60 : 27,145.49 = 12,484.97 : x
  2. Step 2: Convert to fraction form
    18,120.60/27,145.49 = 12,484.97/x
  3. Step 3: Cross multiply
    18,120.60x = 27,145.49 × 12,484.97
  4. Step 4: Simplify right side
    18,120.60x = 338,910,430.13
  5. Step 5: Solve for x
    x = 338,910,430.13/18,120.60
  6. Step 6: Final answer
    x = 18,703.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.