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Finding the Fourth Proportional to 12,350.76, 18,509.58 and 7,965.96

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Solution

The fourth proportional to 12,350.76, 18,509.58 and 7,965.96 is: 11,938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,350.76 : 18,509.58 = 7,965.96 : x
  2. Step 2: Convert to fraction form
    12,350.76/18,509.58 = 7,965.96/x
  3. Step 3: Cross multiply
    12,350.76x = 18,509.58 × 7,965.96
  4. Step 4: Simplify right side
    12,350.76x = 147,446,573.90
  5. Step 5: Solve for x
    x = 147,446,573.90/12,350.76
  6. Step 6: Final answer
    x = 11,938.26

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1.5x scale

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.