Home / 20,476.02-30,728.13-7,149.09

Finding the Fourth Proportional to 20,476.02, 30,728.13 and 7,149.09

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Solution

The fourth proportional to 20,476.02, 30,728.13 and 7,149.09 is: 10,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.02 : 30,728.13 = 7,149.09 : x
  2. Step 2: Convert to fraction form
    20,476.02/30,728.13 = 7,149.09/x
  3. Step 3: Cross multiply
    20,476.02x = 30,728.13 × 7,149.09
  4. Step 4: Simplify right side
    20,476.02x = 219,678,166.90
  5. Step 5: Solve for x
    x = 219,678,166.90/20,476.02
  6. Step 6: Final answer
    x = 10,728.56

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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.