Home / 20,434.50-28,199.63-11,481.99

Finding the Fourth Proportional to 20,434.50, 28,199.63 and 11,481.99

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Solution

The fourth proportional to 20,434.50, 28,199.63 and 11,481.99 is: 15,845.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.50 : 28,199.63 = 11,481.99 : x
  2. Step 2: Convert to fraction form
    20,434.50/28,199.63 = 11,481.99/x
  3. Step 3: Cross multiply
    20,434.50x = 28,199.63 × 11,481.99
  4. Step 4: Simplify right side
    20,434.50x = 323,787,812.25
  5. Step 5: Solve for x
    x = 323,787,812.25/20,434.50
  6. Step 6: Final answer
    x = 15,845.15

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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.