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Finding the Fourth Proportional to 30,659.72, 45,969.80 and 14,640.59

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Solution

The fourth proportional to 30,659.72, 45,969.80 and 14,640.59 is: 21,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,659.72 : 45,969.80 = 14,640.59 : x
  2. Step 2: Convert to fraction form
    30,659.72/45,969.80 = 14,640.59/x
  3. Step 3: Cross multiply
    30,659.72x = 45,969.80 × 14,640.59
  4. Step 4: Simplify right side
    30,659.72x = 673,025,035.90
  5. Step 5: Solve for x
    x = 673,025,035.90/30,659.72
  6. Step 6: Final answer
    x = 21,951.44

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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.