Home / 21,203.52-31,790.64-14,185.92

Finding the Fourth Proportional to 21,203.52, 31,790.64 and 14,185.92

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Solution

The fourth proportional to 21,203.52, 31,790.64 and 14,185.92 is: 21,269.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.52 : 31,790.64 = 14,185.92 : x
  2. Step 2: Convert to fraction form
    21,203.52/31,790.64 = 14,185.92/x
  3. Step 3: Cross multiply
    21,203.52x = 31,790.64 × 14,185.92
  4. Step 4: Simplify right side
    21,203.52x = 450,979,475.79
  5. Step 5: Solve for x
    x = 450,979,475.79/21,203.52
  6. Step 6: Final answer
    x = 21,269.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.