Home / 20,720.45-31,080.89-16,586.74

Finding the Fourth Proportional to 20,720.45, 31,080.89 and 16,586.74

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Solution

The fourth proportional to 20,720.45, 31,080.89 and 16,586.74 is: 24,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.45 : 31,080.89 = 16,586.74 : x
  2. Step 2: Convert to fraction form
    20,720.45/31,080.89 = 16,586.74/x
  3. Step 3: Cross multiply
    20,720.45x = 31,080.89 × 16,586.74
  4. Step 4: Simplify right side
    20,720.45x = 515,530,584.96
  5. Step 5: Solve for x
    x = 515,530,584.96/20,720.45
  6. Step 6: Final answer
    x = 24,880.28

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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.