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Finding the Fourth Proportional to 20,602.30, 28,406.10 and 17,409.82

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Solution

The fourth proportional to 20,602.30, 28,406.10 and 17,409.82 is: 24,004.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.30 : 28,406.10 = 17,409.82 : x
  2. Step 2: Convert to fraction form
    20,602.30/28,406.10 = 17,409.82/x
  3. Step 3: Cross multiply
    20,602.30x = 28,406.10 × 17,409.82
  4. Step 4: Simplify right side
    20,602.30x = 494,545,087.90
  5. Step 5: Solve for x
    x = 494,545,087.90/20,602.30
  6. Step 6: Final answer
    x = 24,004.36

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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.