Home / 13,578.12-20,363.18-4,090.05

Finding the Fourth Proportional to 13,578.12, 20,363.18 and 4,090.05

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Solution

The fourth proportional to 13,578.12, 20,363.18 and 4,090.05 is: 6,133.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.12 : 20,363.18 = 4,090.05 : x
  2. Step 2: Convert to fraction form
    13,578.12/20,363.18 = 4,090.05/x
  3. Step 3: Cross multiply
    13,578.12x = 20,363.18 × 4,090.05
  4. Step 4: Simplify right side
    13,578.12x = 83,286,302.09
  5. Step 5: Solve for x
    x = 83,286,302.09/13,578.12
  6. Step 6: Final answer
    x = 6,133.86

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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.