Home / 20,905.45-28,848.22-11,473.95

Finding the Fourth Proportional to 20,905.45, 28,848.22 and 11,473.95

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Solution

The fourth proportional to 20,905.45, 28,848.22 and 11,473.95 is: 15,833.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.45 : 28,848.22 = 11,473.95 : x
  2. Step 2: Convert to fraction form
    20,905.45/28,848.22 = 11,473.95/x
  3. Step 3: Cross multiply
    20,905.45x = 28,848.22 × 11,473.95
  4. Step 4: Simplify right side
    20,905.45x = 331,003,033.87
  5. Step 5: Solve for x
    x = 331,003,033.87/20,905.45
  6. Step 6: Final answer
    x = 15,833.34

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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.