Home / 13,385.87-18,474.68-12,795.29

Finding the Fourth Proportional to 13,385.87, 18,474.68 and 12,795.29

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Solution

The fourth proportional to 13,385.87, 18,474.68 and 12,795.29 is: 17,659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.87 : 18,474.68 = 12,795.29 : x
  2. Step 2: Convert to fraction form
    13,385.87/18,474.68 = 12,795.29/x
  3. Step 3: Cross multiply
    13,385.87x = 18,474.68 × 12,795.29
  4. Step 4: Simplify right side
    13,385.87x = 236,388,824.28
  5. Step 5: Solve for x
    x = 236,388,824.28/13,385.87
  6. Step 6: Final answer
    x = 17,659.58

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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.