Home / 20,076.90-30,115.35-16,851.30

Finding the Fourth Proportional to 20,076.90, 30,115.35 and 16,851.30

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Solution

The fourth proportional to 20,076.90, 30,115.35 and 16,851.30 is: 25,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.90 : 30,115.35 = 16,851.30 : x
  2. Step 2: Convert to fraction form
    20,076.90/30,115.35 = 16,851.30/x
  3. Step 3: Cross multiply
    20,076.90x = 30,115.35 × 16,851.30
  4. Step 4: Simplify right side
    20,076.90x = 507,482,797.46
  5. Step 5: Solve for x
    x = 507,482,797.46/20,076.90
  6. Step 6: Final answer
    x = 25,276.95

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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.