Home / 13,731.72-18,949.58-7,763.19

Finding the Fourth Proportional to 13,731.72, 18,949.58 and 7,763.19

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Solution

The fourth proportional to 13,731.72, 18,949.58 and 7,763.19 is: 10,713.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.72 : 18,949.58 = 7,763.19 : x
  2. Step 2: Convert to fraction form
    13,731.72/18,949.58 = 7,763.19/x
  3. Step 3: Cross multiply
    13,731.72x = 18,949.58 × 7,763.19
  4. Step 4: Simplify right side
    13,731.72x = 147,109,151.14
  5. Step 5: Solve for x
    x = 147,109,151.14/13,731.72
  6. Step 6: Final answer
    x = 10,713.09

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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.