Home / 20,346.36-28,079.70-11,393.73

Finding the Fourth Proportional to 20,346.36, 28,079.70 and 11,393.73

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Solution

The fourth proportional to 20,346.36, 28,079.70 and 11,393.73 is: 15,724.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.36 : 28,079.70 = 11,393.73 : x
  2. Step 2: Convert to fraction form
    20,346.36/28,079.70 = 11,393.73/x
  3. Step 3: Cross multiply
    20,346.36x = 28,079.70 × 11,393.73
  4. Step 4: Simplify right side
    20,346.36x = 319,932,520.28
  5. Step 5: Solve for x
    x = 319,932,520.28/20,346.36
  6. Step 6: Final answer
    x = 15,724.31

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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.