Home / 13,279.42-19,919.08-3,417.87

Finding the Fourth Proportional to 13,279.42, 19,919.08 and 3,417.87

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Solution

The fourth proportional to 13,279.42, 19,919.08 and 3,417.87 is: 5,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.42 : 19,919.08 = 3,417.87 : x
  2. Step 2: Convert to fraction form
    13,279.42/19,919.08 = 3,417.87/x
  3. Step 3: Cross multiply
    13,279.42x = 19,919.08 × 3,417.87
  4. Step 4: Simplify right side
    13,279.42x = 68,080,825.96
  5. Step 5: Solve for x
    x = 68,080,825.96/13,279.42
  6. Step 6: Final answer
    x = 5,126.79

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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.