Home / 13,279.88-19,919.84-5,488.89

Finding the Fourth Proportional to 13,279.88, 19,919.84 and 5,488.89

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Solution

The fourth proportional to 13,279.88, 19,919.84 and 5,488.89 is: 8,233.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.88 : 19,919.84 = 5,488.89 : x
  2. Step 2: Convert to fraction form
    13,279.88/19,919.84 = 5,488.89/x
  3. Step 3: Cross multiply
    13,279.88x = 19,919.84 × 5,488.89
  4. Step 4: Simplify right side
    13,279.88x = 109,337,783.13
  5. Step 5: Solve for x
    x = 109,337,783.13/13,279.88
  6. Step 6: Final answer
    x = 8,233.34

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1.5x scale

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.