Home / 18,996.90-28,500.85-5,851.20

Finding the Fourth Proportional to 18,996.90, 28,500.85 and 5,851.20

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Solution

The fourth proportional to 18,996.90, 28,500.85 and 5,851.20 is: 8,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.90 : 28,500.85 = 5,851.20 : x
  2. Step 2: Convert to fraction form
    18,996.90/28,500.85 = 5,851.20/x
  3. Step 3: Cross multiply
    18,996.90x = 28,500.85 × 5,851.20
  4. Step 4: Simplify right side
    18,996.90x = 166,764,254.80
  5. Step 5: Solve for x
    x = 166,764,254.80/18,996.90
  6. Step 6: Final answer
    x = 8,778.50

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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.