Home / 10,421.28-15,621-3,843.36

Finding the Fourth Proportional to 10,421.28, 15,621 and 3,843.36

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Solution

The fourth proportional to 10,421.28, 15,621 and 3,843.36 is: 5,761.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.28 : 15,621 = 3,843.36 : x
  2. Step 2: Convert to fraction form
    10,421.28/15,621 = 3,843.36/x
  3. Step 3: Cross multiply
    10,421.28x = 15,621 × 3,843.36
  4. Step 4: Simplify right side
    10,421.28x = 60,037,126.56
  5. Step 5: Solve for x
    x = 60,037,126.56/10,421.28
  6. Step 6: Final answer
    x = 5,761.01

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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.