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Finding the Fourth Proportional to 12,803.40, 19,207.98 and 5,879.88

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Solution

The fourth proportional to 12,803.40, 19,207.98 and 5,879.88 is: 8,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.40 : 19,207.98 = 5,879.88 : x
  2. Step 2: Convert to fraction form
    12,803.40/19,207.98 = 5,879.88/x
  3. Step 3: Cross multiply
    12,803.40x = 19,207.98 × 5,879.88
  4. Step 4: Simplify right side
    12,803.40x = 112,940,617.44
  5. Step 5: Solve for x
    x = 112,940,617.44/12,803.40
  6. Step 6: Final answer
    x = 8,821.14

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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.