Home / 27,914.85-38,520.48-15,811.86

Finding the Fourth Proportional to 27,914.85, 38,520.48 and 15,811.86

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Solution

The fourth proportional to 27,914.85, 38,520.48 and 15,811.86 is: 21,819.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,914.85 : 38,520.48 = 15,811.86 : x
  2. Step 2: Convert to fraction form
    27,914.85/38,520.48 = 15,811.86/x
  3. Step 3: Cross multiply
    27,914.85x = 38,520.48 × 15,811.86
  4. Step 4: Simplify right side
    27,914.85x = 609,080,436.89
  5. Step 5: Solve for x
    x = 609,080,436.89/27,914.85
  6. Step 6: Final answer
    x = 21,819.23

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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.