Home / 13,731.19-18,949.86-7,763.42

Finding the Fourth Proportional to 13,731.19, 18,949.86 and 7,763.42

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Solution

The fourth proportional to 13,731.19, 18,949.86 and 7,763.42 is: 10,713.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.19 : 18,949.86 = 7,763.42 : x
  2. Step 2: Convert to fraction form
    13,731.19/18,949.86 = 7,763.42/x
  3. Step 3: Cross multiply
    13,731.19x = 18,949.86 × 7,763.42
  4. Step 4: Simplify right side
    13,731.19x = 147,115,722.12
  5. Step 5: Solve for x
    x = 147,115,722.12/13,731.19
  6. Step 6: Final answer
    x = 10,713.98

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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.