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Finding the Fourth Proportional to 36,639.63, 54,920.97 and 16,931.12

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Solution

The fourth proportional to 36,639.63, 54,920.97 and 16,931.12 is: 25,378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,639.63 : 54,920.97 = 16,931.12 : x
  2. Step 2: Convert to fraction form
    36,639.63/54,920.97 = 16,931.12/x
  3. Step 3: Cross multiply
    36,639.63x = 54,920.97 × 16,931.12
  4. Step 4: Simplify right side
    36,639.63x = 929,873,258.98
  5. Step 5: Solve for x
    x = 929,873,258.98/36,639.63
  6. Step 6: Final answer
    x = 25,378.89

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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.