Home / 13,176.09-19,766.30-5,382.81

Finding the Fourth Proportional to 13,176.09, 19,766.30 and 5,382.81

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Solution

The fourth proportional to 13,176.09, 19,766.30 and 5,382.81 is: 8,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.09 : 19,766.30 = 5,382.81 : x
  2. Step 2: Convert to fraction form
    13,176.09/19,766.30 = 5,382.81/x
  3. Step 3: Cross multiply
    13,176.09x = 19,766.30 × 5,382.81
  4. Step 4: Simplify right side
    13,176.09x = 106,398,210.39
  5. Step 5: Solve for x
    x = 106,398,210.39/13,176.09
  6. Step 6: Final answer
    x = 8,075.10

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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.