Home / 10,109.41-15,168.21-3,872.36

Finding the Fourth Proportional to 10,109.41, 15,168.21 and 3,872.36

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Solution

The fourth proportional to 10,109.41, 15,168.21 and 3,872.36 is: 5,810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.41 : 15,168.21 = 3,872.36 : x
  2. Step 2: Convert to fraction form
    10,109.41/15,168.21 = 3,872.36/x
  3. Step 3: Cross multiply
    10,109.41x = 15,168.21 × 3,872.36
  4. Step 4: Simplify right side
    10,109.41x = 58,736,729.54
  5. Step 5: Solve for x
    x = 58,736,729.54/10,109.41
  6. Step 6: Final answer
    x = 5,810.11

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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.