Home / 20,305.54-28,025.10-11,812.58

Finding the Fourth Proportional to 20,305.54, 28,025.10 and 11,812.58

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Solution

The fourth proportional to 20,305.54, 28,025.10 and 11,812.58 is: 16,303.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.54 : 28,025.10 = 11,812.58 : x
  2. Step 2: Convert to fraction form
    20,305.54/28,025.10 = 11,812.58/x
  3. Step 3: Cross multiply
    20,305.54x = 28,025.10 × 11,812.58
  4. Step 4: Simplify right side
    20,305.54x = 331,048,735.76
  5. Step 5: Solve for x
    x = 331,048,735.76/20,305.54
  6. Step 6: Final answer
    x = 16,303.37

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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.