Home / 18,657.21-25,748.78-13,933.29

Finding the Fourth Proportional to 18,657.21, 25,748.78 and 13,933.29

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Solution

The fourth proportional to 18,657.21, 25,748.78 and 13,933.29 is: 19,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.21 : 25,748.78 = 13,933.29 : x
  2. Step 2: Convert to fraction form
    18,657.21/25,748.78 = 13,933.29/x
  3. Step 3: Cross multiply
    18,657.21x = 25,748.78 × 13,933.29
  4. Step 4: Simplify right side
    18,657.21x = 358,765,149.22
  5. Step 5: Solve for x
    x = 358,765,149.22/18,657.21
  6. Step 6: Final answer
    x = 19,229.30

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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.