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Finding the Fourth Proportional to 30,640.71, 45,950.72 and 11,660.84

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Solution

The fourth proportional to 30,640.71, 45,950.72 and 11,660.84 is: 17,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.71 : 45,950.72 = 11,660.84 : x
  2. Step 2: Convert to fraction form
    30,640.71/45,950.72 = 11,660.84/x
  3. Step 3: Cross multiply
    30,640.71x = 45,950.72 × 11,660.84
  4. Step 4: Simplify right side
    30,640.71x = 535,823,993.80
  5. Step 5: Solve for x
    x = 535,823,993.80/30,640.71
  6. Step 6: Final answer
    x = 17,487.32

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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.