Home / 17,108.36-25,662.35-5,421.57

Finding the Fourth Proportional to 17,108.36, 25,662.35 and 5,421.57

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Solution

The fourth proportional to 17,108.36, 25,662.35 and 5,421.57 is: 8,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,108.36 : 25,662.35 = 5,421.57 : x
  2. Step 2: Convert to fraction form
    17,108.36/25,662.35 = 5,421.57/x
  3. Step 3: Cross multiply
    17,108.36x = 25,662.35 × 5,421.57
  4. Step 4: Simplify right side
    17,108.36x = 139,130,199.78
  5. Step 5: Solve for x
    x = 139,130,199.78/17,108.36
  6. Step 6: Final answer
    x = 8,132.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.