Home / 13,621.29-20,432.49-4,261.48

Finding the Fourth Proportional to 13,621.29, 20,432.49 and 4,261.48

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Solution

The fourth proportional to 13,621.29, 20,432.49 and 4,261.48 is: 6,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.29 : 20,432.49 = 4,261.48 : x
  2. Step 2: Convert to fraction form
    13,621.29/20,432.49 = 4,261.48/x
  3. Step 3: Cross multiply
    13,621.29x = 20,432.49 × 4,261.48
  4. Step 4: Simplify right side
    13,621.29x = 87,072,709.22
  5. Step 5: Solve for x
    x = 87,072,709.22/13,621.29
  6. Step 6: Final answer
    x = 6,392.40

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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.