Home / 19,000.21-28,500.30-5,149.21

Finding the Fourth Proportional to 19,000.21, 28,500.30 and 5,149.21

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Solution

The fourth proportional to 19,000.21, 28,500.30 and 5,149.21 is: 7,723.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.21 : 28,500.30 = 5,149.21 : x
  2. Step 2: Convert to fraction form
    19,000.21/28,500.30 = 5,149.21/x
  3. Step 3: Cross multiply
    19,000.21x = 28,500.30 × 5,149.21
  4. Step 4: Simplify right side
    19,000.21x = 146,754,029.76
  5. Step 5: Solve for x
    x = 146,754,029.76/19,000.21
  6. Step 6: Final answer
    x = 7,723.81

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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.