Home / 13,731.98-18,951.30-7,764.71

Finding the Fourth Proportional to 13,731.98, 18,951.30 and 7,764.71

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Solution

The fourth proportional to 13,731.98, 18,951.30 and 7,764.71 is: 10,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.98 : 18,951.30 = 7,764.71 : x
  2. Step 2: Convert to fraction form
    13,731.98/18,951.30 = 7,764.71/x
  3. Step 3: Cross multiply
    13,731.98x = 18,951.30 × 7,764.71
  4. Step 4: Simplify right side
    13,731.98x = 147,151,253.87
  5. Step 5: Solve for x
    x = 147,151,253.87/13,731.98
  6. Step 6: Final answer
    x = 10,715.96

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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.