Home / 17,121.60-25,686.90-5,434.80

Finding the Fourth Proportional to 17,121.60, 25,686.90 and 5,434.80

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Solution

The fourth proportional to 17,121.60, 25,686.90 and 5,434.80 is: 8,153.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.60 : 25,686.90 = 5,434.80 : x
  2. Step 2: Convert to fraction form
    17,121.60/25,686.90 = 5,434.80/x
  3. Step 3: Cross multiply
    17,121.60x = 25,686.90 × 5,434.80
  4. Step 4: Simplify right side
    17,121.60x = 139,603,164.12
  5. Step 5: Solve for x
    x = 139,603,164.12/17,121.60
  6. Step 6: Final answer
    x = 8,153.63

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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.