Home / 13,619.90-18,794.31-7,651.10

Finding the Fourth Proportional to 13,619.90, 18,794.31 and 7,651.10

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Solution

The fourth proportional to 13,619.90, 18,794.31 and 7,651.10 is: 10,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.90 : 18,794.31 = 7,651.10 : x
  2. Step 2: Convert to fraction form
    13,619.90/18,794.31 = 7,651.10/x
  3. Step 3: Cross multiply
    13,619.90x = 18,794.31 × 7,651.10
  4. Step 4: Simplify right side
    13,619.90x = 143,797,145.24
  5. Step 5: Solve for x
    x = 143,797,145.24/13,619.90
  6. Step 6: Final answer
    x = 10,557.87

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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.