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Finding the Fourth Proportional to 20,474.76, 30,703.08 and 9,388.44

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Solution

The fourth proportional to 20,474.76, 30,703.08 and 9,388.44 is: 14,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.76 : 30,703.08 = 9,388.44 : x
  2. Step 2: Convert to fraction form
    20,474.76/30,703.08 = 9,388.44/x
  3. Step 3: Cross multiply
    20,474.76x = 30,703.08 × 9,388.44
  4. Step 4: Simplify right side
    20,474.76x = 288,254,024.40
  5. Step 5: Solve for x
    x = 288,254,024.40/20,474.76
  6. Step 6: Final answer
    x = 14,078.51

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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.