Home / 18,578.43-25,638.20-10,080.55

Finding the Fourth Proportional to 18,578.43, 25,638.20 and 10,080.55

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Solution

The fourth proportional to 18,578.43, 25,638.20 and 10,080.55 is: 13,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.43 : 25,638.20 = 10,080.55 : x
  2. Step 2: Convert to fraction form
    18,578.43/25,638.20 = 10,080.55/x
  3. Step 3: Cross multiply
    18,578.43x = 25,638.20 × 10,080.55
  4. Step 4: Simplify right side
    18,578.43x = 258,447,131.81
  5. Step 5: Solve for x
    x = 258,447,131.81/18,578.43
  6. Step 6: Final answer
    x = 13,911.14

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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.