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Finding the Fourth Proportional to 19,604.25, 27,035.53 and 15,120.90

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Solution

The fourth proportional to 19,604.25, 27,035.53 and 15,120.90 is: 20,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,604.25 : 27,035.53 = 15,120.90 : x
  2. Step 2: Convert to fraction form
    19,604.25/27,035.53 = 15,120.90/x
  3. Step 3: Cross multiply
    19,604.25x = 27,035.53 × 15,120.90
  4. Step 4: Simplify right side
    19,604.25x = 408,801,507.77
  5. Step 5: Solve for x
    x = 408,801,507.77/19,604.25
  6. Step 6: Final answer
    x = 20,852.70

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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.