Home / 27,518.21-41,272.35-12,521.80

Finding the Fourth Proportional to 27,518.21, 41,272.35 and 12,521.80

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Solution

The fourth proportional to 27,518.21, 41,272.35 and 12,521.80 is: 18,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,518.21 : 41,272.35 = 12,521.80 : x
  2. Step 2: Convert to fraction form
    27,518.21/41,272.35 = 12,521.80/x
  3. Step 3: Cross multiply
    27,518.21x = 41,272.35 × 12,521.80
  4. Step 4: Simplify right side
    27,518.21x = 516,804,116.86
  5. Step 5: Solve for x
    x = 516,804,116.86/27,518.21
  6. Step 6: Final answer
    x = 18,780.44

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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.