Home / 20,612.48-28,471.92-15,245.83

Finding the Fourth Proportional to 20,612.48, 28,471.92 and 15,245.83

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Solution

The fourth proportional to 20,612.48, 28,471.92 and 15,245.83 is: 21,058.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.48 : 28,471.92 = 15,245.83 : x
  2. Step 2: Convert to fraction form
    20,612.48/28,471.92 = 15,245.83/x
  3. Step 3: Cross multiply
    20,612.48x = 28,471.92 × 15,245.83
  4. Step 4: Simplify right side
    20,612.48x = 434,078,052.09
  5. Step 5: Solve for x
    x = 434,078,052.09/20,612.48
  6. Step 6: Final answer
    x = 21,058.99

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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.