Home / 18,128.68-25,017.53-10,170.90

Finding the Fourth Proportional to 18,128.68, 25,017.53 and 10,170.90

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Solution

The fourth proportional to 18,128.68, 25,017.53 and 10,170.90 is: 14,035.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.68 : 25,017.53 = 10,170.90 : x
  2. Step 2: Convert to fraction form
    18,128.68/25,017.53 = 10,170.90/x
  3. Step 3: Cross multiply
    18,128.68x = 25,017.53 × 10,170.90
  4. Step 4: Simplify right side
    18,128.68x = 254,450,745.02
  5. Step 5: Solve for x
    x = 254,450,745.02/18,128.68
  6. Step 6: Final answer
    x = 14,035.81

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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.