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Finding the Fourth Proportional to 30,640.52, 45,953.94 and 11,914.40

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Solution

The fourth proportional to 30,640.52, 45,953.94 and 11,914.40 is: 17,868.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.52 : 45,953.94 = 11,914.40 : x
  2. Step 2: Convert to fraction form
    30,640.52/45,953.94 = 11,914.40/x
  3. Step 3: Cross multiply
    30,640.52x = 45,953.94 × 11,914.40
  4. Step 4: Simplify right side
    30,640.52x = 547,513,622.74
  5. Step 5: Solve for x
    x = 547,513,622.74/30,640.52
  6. Step 6: Final answer
    x = 17,868.94

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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.