Home / 12,159.28-18,236.49-3,837.88

Finding the Fourth Proportional to 12,159.28, 18,236.49 and 3,837.88

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Solution

The fourth proportional to 12,159.28, 18,236.49 and 3,837.88 is: 5,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.28 : 18,236.49 = 3,837.88 : x
  2. Step 2: Convert to fraction form
    12,159.28/18,236.49 = 3,837.88/x
  3. Step 3: Cross multiply
    12,159.28x = 18,236.49 × 3,837.88
  4. Step 4: Simplify right side
    12,159.28x = 69,989,460.24
  5. Step 5: Solve for x
    x = 69,989,460.24/12,159.28
  6. Step 6: Final answer
    x = 5,756.05

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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.