Home / 13,890.83-19,169.20-7,517.29

Finding the Fourth Proportional to 13,890.83, 19,169.20 and 7,517.29

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Solution

The fourth proportional to 13,890.83, 19,169.20 and 7,517.29 is: 10,373.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.83 : 19,169.20 = 7,517.29 : x
  2. Step 2: Convert to fraction form
    13,890.83/19,169.20 = 7,517.29/x
  3. Step 3: Cross multiply
    13,890.83x = 19,169.20 × 7,517.29
  4. Step 4: Simplify right side
    13,890.83x = 144,100,382.38
  5. Step 5: Solve for x
    x = 144,100,382.38/13,890.83
  6. Step 6: Final answer
    x = 10,373.77

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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.