Home / 20,455.60-30,683.40-17,150.80

Finding the Fourth Proportional to 20,455.60, 30,683.40 and 17,150.80

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Solution

The fourth proportional to 20,455.60, 30,683.40 and 17,150.80 is: 25,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.60 : 30,683.40 = 17,150.80 : x
  2. Step 2: Convert to fraction form
    20,455.60/30,683.40 = 17,150.80/x
  3. Step 3: Cross multiply
    20,455.60x = 30,683.40 × 17,150.80
  4. Step 4: Simplify right side
    20,455.60x = 526,244,856.72
  5. Step 5: Solve for x
    x = 526,244,856.72/20,455.60
  6. Step 6: Final answer
    x = 25,726.20

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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.