Home / 27,811.55-38,379.35-15,874.62

Finding the Fourth Proportional to 27,811.55, 38,379.35 and 15,874.62

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Solution

The fourth proportional to 27,811.55, 38,379.35 and 15,874.62 is: 21,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,811.55 : 38,379.35 = 15,874.62 : x
  2. Step 2: Convert to fraction form
    27,811.55/38,379.35 = 15,874.62/x
  3. Step 3: Cross multiply
    27,811.55x = 38,379.35 × 15,874.62
  4. Step 4: Simplify right side
    27,811.55x = 609,257,492.86
  5. Step 5: Solve for x
    x = 609,257,492.86/27,811.55
  6. Step 6: Final answer
    x = 21,906.63

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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.