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Finding the Fourth Proportional to 20,566.74, 30,862.40 and 18,893.68

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Solution

The fourth proportional to 20,566.74, 30,862.40 and 18,893.68 is: 28,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.74 : 30,862.40 = 18,893.68 : x
  2. Step 2: Convert to fraction form
    20,566.74/30,862.40 = 18,893.68/x
  3. Step 3: Cross multiply
    20,566.74x = 30,862.40 × 18,893.68
  4. Step 4: Simplify right side
    20,566.74x = 583,104,309.63
  5. Step 5: Solve for x
    x = 583,104,309.63/20,566.74
  6. Step 6: Final answer
    x = 28,351.81

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1.5x scale

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.