Home / 20,832.30-28,737.84-14,115.64

Finding the Fourth Proportional to 20,832.30, 28,737.84 and 14,115.64

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Solution

The fourth proportional to 20,832.30, 28,737.84 and 14,115.64 is: 19,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.30 : 28,737.84 = 14,115.64 : x
  2. Step 2: Convert to fraction form
    20,832.30/28,737.84 = 14,115.64/x
  3. Step 3: Cross multiply
    20,832.30x = 28,737.84 × 14,115.64
  4. Step 4: Simplify right side
    20,832.30x = 405,653,003.82
  5. Step 5: Solve for x
    x = 405,653,003.82/20,832.30
  6. Step 6: Final answer
    x = 19,472.31

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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.