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Finding the Fourth Proportional to 13,310.19, 19,979.13 and 9,804.15

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Solution

The fourth proportional to 13,310.19, 19,979.13 and 9,804.15 is: 14,716.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.19 : 19,979.13 = 9,804.15 : x
  2. Step 2: Convert to fraction form
    13,310.19/19,979.13 = 9,804.15/x
  3. Step 3: Cross multiply
    13,310.19x = 19,979.13 × 9,804.15
  4. Step 4: Simplify right side
    13,310.19x = 195,878,338.37
  5. Step 5: Solve for x
    x = 195,878,338.37/13,310.19
  6. Step 6: Final answer
    x = 14,716.42

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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.