Home / 13,731.85-18,951.14-7,764.58

Finding the Fourth Proportional to 13,731.85, 18,951.14 and 7,764.58

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Solution

The fourth proportional to 13,731.85, 18,951.14 and 7,764.58 is: 10,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.85 : 18,951.14 = 7,764.58 : x
  2. Step 2: Convert to fraction form
    13,731.85/18,951.14 = 7,764.58/x
  3. Step 3: Cross multiply
    13,731.85x = 18,951.14 × 7,764.58
  4. Step 4: Simplify right side
    13,731.85x = 147,147,642.62
  5. Step 5: Solve for x
    x = 147,147,642.62/13,731.85
  6. Step 6: Final answer
    x = 10,715.79

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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.