Home / 13,644.05-20,463.17-3,780.68

Finding the Fourth Proportional to 13,644.05, 20,463.17 and 3,780.68

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Solution

The fourth proportional to 13,644.05, 20,463.17 and 3,780.68 is: 5,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.05 : 20,463.17 = 3,780.68 : x
  2. Step 2: Convert to fraction form
    13,644.05/20,463.17 = 3,780.68/x
  3. Step 3: Cross multiply
    13,644.05x = 20,463.17 × 3,780.68
  4. Step 4: Simplify right side
    13,644.05x = 77,364,576.34
  5. Step 5: Solve for x
    x = 77,364,576.34/13,644.05
  6. Step 6: Final answer
    x = 5,670.21

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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.