Home / 12,108.38-16,709.10-6,803.42

Finding the Fourth Proportional to 12,108.38, 16,709.10 and 6,803.42

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Solution

The fourth proportional to 12,108.38, 16,709.10 and 6,803.42 is: 9,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.38 : 16,709.10 = 6,803.42 : x
  2. Step 2: Convert to fraction form
    12,108.38/16,709.10 = 6,803.42/x
  3. Step 3: Cross multiply
    12,108.38x = 16,709.10 × 6,803.42
  4. Step 4: Simplify right side
    12,108.38x = 113,679,025.12
  5. Step 5: Solve for x
    x = 113,679,025.12/12,108.38
  6. Step 6: Final answer
    x = 9,388.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.