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Finding the Fourth Proportional to 30,360.16, 45,560.82 and 10,639

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Solution

The fourth proportional to 30,360.16, 45,560.82 and 10,639 is: 15,965.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,360.16 : 45,560.82 = 10,639 : x
  2. Step 2: Convert to fraction form
    30,360.16/45,560.82 = 10,639/x
  3. Step 3: Cross multiply
    30,360.16x = 45,560.82 × 10,639
  4. Step 4: Simplify right side
    30,360.16x = 484,721,563.98
  5. Step 5: Solve for x
    x = 484,721,563.98/30,360.16
  6. Step 6: Final answer
    x = 15,965.71

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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.