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Finding the Fourth Proportional to 31,639.68, 43,661.04 and 17,491.68

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Solution

The fourth proportional to 31,639.68, 43,661.04 and 17,491.68 is: 24,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.68 : 43,661.04 = 17,491.68 : x
  2. Step 2: Convert to fraction form
    31,639.68/43,661.04 = 17,491.68/x
  3. Step 3: Cross multiply
    31,639.68x = 43,661.04 × 17,491.68
  4. Step 4: Simplify right side
    31,639.68x = 763,704,940.15
  5. Step 5: Solve for x
    x = 763,704,940.15/31,639.68
  6. Step 6: Final answer
    x = 24,137.57

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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.