Home / 13,672.62-18,867.68-7,705.50

Finding the Fourth Proportional to 13,672.62, 18,867.68 and 7,705.50

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Solution

The fourth proportional to 13,672.62, 18,867.68 and 7,705.50 is: 10,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.62 : 18,867.68 = 7,705.50 : x
  2. Step 2: Convert to fraction form
    13,672.62/18,867.68 = 7,705.50/x
  3. Step 3: Cross multiply
    13,672.62x = 18,867.68 × 7,705.50
  4. Step 4: Simplify right side
    13,672.62x = 145,384,908.24
  5. Step 5: Solve for x
    x = 145,384,908.24/13,672.62
  6. Step 6: Final answer
    x = 10,633.29

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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.