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Finding the Fourth Proportional to 13,673.31, 20,510.97 and 4,908.30

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Solution

The fourth proportional to 13,673.31, 20,510.97 and 4,908.30 is: 7,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.31 : 20,510.97 = 4,908.30 : x
  2. Step 2: Convert to fraction form
    13,673.31/20,510.97 = 4,908.30/x
  3. Step 3: Cross multiply
    13,673.31x = 20,510.97 × 4,908.30
  4. Step 4: Simplify right side
    13,673.31x = 100,673,994.05
  5. Step 5: Solve for x
    x = 100,673,994.05/13,673.31
  6. Step 6: Final answer
    x = 7,362.81

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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.