Home / 18,635.99-25,716.51-10,138.04

Finding the Fourth Proportional to 18,635.99, 25,716.51 and 10,138.04

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Solution

The fourth proportional to 18,635.99, 25,716.51 and 10,138.04 is: 13,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.99 : 25,716.51 = 10,138.04 : x
  2. Step 2: Convert to fraction form
    18,635.99/25,716.51 = 10,138.04/x
  3. Step 3: Cross multiply
    18,635.99x = 25,716.51 × 10,138.04
  4. Step 4: Simplify right side
    18,635.99x = 260,714,878.46
  5. Step 5: Solve for x
    x = 260,714,878.46/18,635.99
  6. Step 6: Final answer
    x = 13,989.86

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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.