Home / 13,734.05-18,951.71-7,765.70

Finding the Fourth Proportional to 13,734.05, 18,951.71 and 7,765.70

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Solution

The fourth proportional to 13,734.05, 18,951.71 and 7,765.70 is: 10,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.05 : 18,951.71 = 7,765.70 : x
  2. Step 2: Convert to fraction form
    13,734.05/18,951.71 = 7,765.70/x
  3. Step 3: Cross multiply
    13,734.05x = 18,951.71 × 7,765.70
  4. Step 4: Simplify right side
    13,734.05x = 147,173,160.76
  5. Step 5: Solve for x
    x = 147,173,160.76/13,734.05
  6. Step 6: Final answer
    x = 10,715.94

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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.