Home / 13,396.12-18,488.84-12,805.56

Finding the Fourth Proportional to 13,396.12, 18,488.84 and 12,805.56

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Solution

The fourth proportional to 13,396.12, 18,488.84 and 12,805.56 is: 17,673.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.12 : 18,488.84 = 12,805.56 : x
  2. Step 2: Convert to fraction form
    13,396.12/18,488.84 = 12,805.56/x
  3. Step 3: Cross multiply
    13,396.12x = 18,488.84 × 12,805.56
  4. Step 4: Simplify right side
    13,396.12x = 236,759,949.95
  5. Step 5: Solve for x
    x = 236,759,949.95/13,396.12
  6. Step 6: Final answer
    x = 17,673.77

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1.5x scale

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.