Home / 17,821.45-26,742.22-12,279.23

Finding the Fourth Proportional to 17,821.45, 26,742.22 and 12,279.23

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Solution

The fourth proportional to 17,821.45, 26,742.22 and 12,279.23 is: 18,425.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,821.45 : 26,742.22 = 12,279.23 : x
  2. Step 2: Convert to fraction form
    17,821.45/26,742.22 = 12,279.23/x
  3. Step 3: Cross multiply
    17,821.45x = 26,742.22 × 12,279.23
  4. Step 4: Simplify right side
    17,821.45x = 328,373,805.96
  5. Step 5: Solve for x
    x = 328,373,805.96/17,821.45
  6. Step 6: Final answer
    x = 18,425.76

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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.