Home / 13,663.43-18,855.21-7,695.12

Finding the Fourth Proportional to 13,663.43, 18,855.21 and 7,695.12

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Solution

The fourth proportional to 13,663.43, 18,855.21 and 7,695.12 is: 10,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.43 : 18,855.21 = 7,695.12 : x
  2. Step 2: Convert to fraction form
    13,663.43/18,855.21 = 7,695.12/x
  3. Step 3: Cross multiply
    13,663.43x = 18,855.21 × 7,695.12
  4. Step 4: Simplify right side
    13,663.43x = 145,093,103.58
  5. Step 5: Solve for x
    x = 145,093,103.58/13,663.43
  6. Step 6: Final answer
    x = 10,619.08

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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.