Home / 18,087.21-24,960.87-10,129.35

Finding the Fourth Proportional to 18,087.21, 24,960.87 and 10,129.35

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Solution

The fourth proportional to 18,087.21, 24,960.87 and 10,129.35 is: 13,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.21 : 24,960.87 = 10,129.35 : x
  2. Step 2: Convert to fraction form
    18,087.21/24,960.87 = 10,129.35/x
  3. Step 3: Cross multiply
    18,087.21x = 24,960.87 × 10,129.35
  4. Step 4: Simplify right side
    18,087.21x = 252,837,388.53
  5. Step 5: Solve for x
    x = 252,837,388.53/18,087.21
  6. Step 6: Final answer
    x = 13,978.79

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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.