Home / 20,091.90-30,137.85-16,835.70

Finding the Fourth Proportional to 20,091.90, 30,137.85 and 16,835.70

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Solution

The fourth proportional to 20,091.90, 30,137.85 and 16,835.70 is: 25,253.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.90 : 30,137.85 = 16,835.70 : x
  2. Step 2: Convert to fraction form
    20,091.90/30,137.85 = 16,835.70/x
  3. Step 3: Cross multiply
    20,091.90x = 30,137.85 × 16,835.70
  4. Step 4: Simplify right side
    20,091.90x = 507,391,801.25
  5. Step 5: Solve for x
    x = 507,391,801.25/20,091.90
  6. Step 6: Final answer
    x = 25,253.55

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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.