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Finding the Fourth Proportional to 30,011.17, 44,980.79 and 13,979.09

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Solution

The fourth proportional to 30,011.17, 44,980.79 and 13,979.09 is: 20,951.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,011.17 : 44,980.79 = 13,979.09 : x
  2. Step 2: Convert to fraction form
    30,011.17/44,980.79 = 13,979.09/x
  3. Step 3: Cross multiply
    30,011.17x = 44,980.79 × 13,979.09
  4. Step 4: Simplify right side
    30,011.17x = 628,790,545.68
  5. Step 5: Solve for x
    x = 628,790,545.68/30,011.17
  6. Step 6: Final answer
    x = 20,951.89

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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.