Home / 15,400.20-23,105.70-5,539.80

Finding the Fourth Proportional to 15,400.20, 23,105.70 and 5,539.80

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Solution

The fourth proportional to 15,400.20, 23,105.70 and 5,539.80 is: 8,311.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.20 : 23,105.70 = 5,539.80 : x
  2. Step 2: Convert to fraction form
    15,400.20/23,105.70 = 5,539.80/x
  3. Step 3: Cross multiply
    15,400.20x = 23,105.70 × 5,539.80
  4. Step 4: Simplify right side
    15,400.20x = 128,000,956.86
  5. Step 5: Solve for x
    x = 128,000,956.86/15,400.20
  6. Step 6: Final answer
    x = 8,311.64

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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.