Home / 10,505.63-15,758.75-3,930.56

Finding the Fourth Proportional to 10,505.63, 15,758.75 and 3,930.56

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Solution

The fourth proportional to 10,505.63, 15,758.75 and 3,930.56 is: 5,895.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.63 : 15,758.75 = 3,930.56 : x
  2. Step 2: Convert to fraction form
    10,505.63/15,758.75 = 3,930.56/x
  3. Step 3: Cross multiply
    10,505.63x = 15,758.75 × 3,930.56
  4. Step 4: Simplify right side
    10,505.63x = 61,940,712.40
  5. Step 5: Solve for x
    x = 61,940,712.40/10,505.63
  6. Step 6: Final answer
    x = 5,895.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.