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Finding the Fourth Proportional to 21,835.30, 30,100.92 and 17,360.86

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Solution

The fourth proportional to 21,835.30, 30,100.92 and 17,360.86 is: 23,932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.30 : 30,100.92 = 17,360.86 : x
  2. Step 2: Convert to fraction form
    21,835.30/30,100.92 = 17,360.86/x
  3. Step 3: Cross multiply
    21,835.30x = 30,100.92 × 17,360.86
  4. Step 4: Simplify right side
    21,835.30x = 522,577,857.99
  5. Step 5: Solve for x
    x = 522,577,857.99/21,835.30
  6. Step 6: Final answer
    x = 23,932.71

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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.