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Finding the Fourth Proportional to 20,652, 28,574.82 and 18,004.92

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Solution

The fourth proportional to 20,652, 28,574.82 and 18,004.92 is: 24,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652 : 28,574.82 = 18,004.92 : x
  2. Step 2: Convert to fraction form
    20,652/28,574.82 = 18,004.92/x
  3. Step 3: Cross multiply
    20,652x = 28,574.82 × 18,004.92
  4. Step 4: Simplify right side
    20,652x = 514,487,348.11
  5. Step 5: Solve for x
    x = 514,487,348.11/20,652
  6. Step 6: Final answer
    x = 24,912.23

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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.