Home / 21,203.64-31,815.72-8,727.48

Finding the Fourth Proportional to 21,203.64, 31,815.72 and 8,727.48

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Solution

The fourth proportional to 21,203.64, 31,815.72 and 8,727.48 is: 13,095.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.64 : 31,815.72 = 8,727.48 : x
  2. Step 2: Convert to fraction form
    21,203.64/31,815.72 = 8,727.48/x
  3. Step 3: Cross multiply
    21,203.64x = 31,815.72 × 8,727.48
  4. Step 4: Simplify right side
    21,203.64x = 277,671,059.99
  5. Step 5: Solve for x
    x = 277,671,059.99/21,203.64
  6. Step 6: Final answer
    x = 13,095.44

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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.