Home / 13,618.88-20,429.58-5,299.52

Finding the Fourth Proportional to 13,618.88, 20,429.58 and 5,299.52

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Solution

The fourth proportional to 13,618.88, 20,429.58 and 5,299.52 is: 7,949.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.88 : 20,429.58 = 5,299.52 : x
  2. Step 2: Convert to fraction form
    13,618.88/20,429.58 = 5,299.52/x
  3. Step 3: Cross multiply
    13,618.88x = 20,429.58 × 5,299.52
  4. Step 4: Simplify right side
    13,618.88x = 108,266,967.80
  5. Step 5: Solve for x
    x = 108,266,967.80/13,618.88
  6. Step 6: Final answer
    x = 7,949.77

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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.