Home / 13,418.46-18,509.68-11,303.90

Finding the Fourth Proportional to 13,418.46, 18,509.68 and 11,303.90

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Solution

The fourth proportional to 13,418.46, 18,509.68 and 11,303.90 is: 15,592.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.46 : 18,509.68 = 11,303.90 : x
  2. Step 2: Convert to fraction form
    13,418.46/18,509.68 = 11,303.90/x
  3. Step 3: Cross multiply
    13,418.46x = 18,509.68 × 11,303.90
  4. Step 4: Simplify right side
    13,418.46x = 209,231,589.77
  5. Step 5: Solve for x
    x = 209,231,589.77/13,418.46
  6. Step 6: Final answer
    x = 15,592.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.