Home / 20,471.66-28,252.32-11,520.02

Finding the Fourth Proportional to 20,471.66, 28,252.32 and 11,520.02

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Solution

The fourth proportional to 20,471.66, 28,252.32 and 11,520.02 is: 15,898.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.66 : 28,252.32 = 11,520.02 : x
  2. Step 2: Convert to fraction form
    20,471.66/28,252.32 = 11,520.02/x
  3. Step 3: Cross multiply
    20,471.66x = 28,252.32 × 11,520.02
  4. Step 4: Simplify right side
    20,471.66x = 325,467,291.45
  5. Step 5: Solve for x
    x = 325,467,291.45/20,471.66
  6. Step 6: Final answer
    x = 15,898.43

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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.