Home / 20,155.40-30,200.70-16,850.60

Finding the Fourth Proportional to 20,155.40, 30,200.70 and 16,850.60

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Solution

The fourth proportional to 20,155.40, 30,200.70 and 16,850.60 is: 25,248.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.40 : 30,200.70 = 16,850.60 : x
  2. Step 2: Convert to fraction form
    20,155.40/30,200.70 = 16,850.60/x
  3. Step 3: Cross multiply
    20,155.40x = 30,200.70 × 16,850.60
  4. Step 4: Simplify right side
    20,155.40x = 508,899,915.42
  5. Step 5: Solve for x
    x = 508,899,915.42/20,155.40
  6. Step 6: Final answer
    x = 25,248.81

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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.