Home / 18,629.90-25,708.91-10,131.87

Finding the Fourth Proportional to 18,629.90, 25,708.91 and 10,131.87

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Solution

The fourth proportional to 18,629.90, 25,708.91 and 10,131.87 is: 13,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,629.90 : 25,708.91 = 10,131.87 : x
  2. Step 2: Convert to fraction form
    18,629.90/25,708.91 = 10,131.87/x
  3. Step 3: Cross multiply
    18,629.90x = 25,708.91 × 10,131.87
  4. Step 4: Simplify right side
    18,629.90x = 260,479,333.96
  5. Step 5: Solve for x
    x = 260,479,333.96/18,629.90
  6. Step 6: Final answer
    x = 13,981.79

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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.