Home / 12,998.05-19,490.90-6,751.80

Finding the Fourth Proportional to 12,998.05, 19,490.90 and 6,751.80

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Solution

The fourth proportional to 12,998.05, 19,490.90 and 6,751.80 is: 10,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.05 : 19,490.90 = 6,751.80 : x
  2. Step 2: Convert to fraction form
    12,998.05/19,490.90 = 6,751.80/x
  3. Step 3: Cross multiply
    12,998.05x = 19,490.90 × 6,751.80
  4. Step 4: Simplify right side
    12,998.05x = 131,598,624.86
  5. Step 5: Solve for x
    x = 131,598,624.86/12,998.05
  6. Step 6: Final answer
    x = 10,124.49

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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.