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Finding the Fourth Proportional to 39,279, 58,920.33 and 11,200.98

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Solution

The fourth proportional to 39,279, 58,920.33 and 11,200.98 is: 16,801.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279 : 58,920.33 = 11,200.98 : x
  2. Step 2: Convert to fraction form
    39,279/58,920.33 = 11,200.98/x
  3. Step 3: Cross multiply
    39,279x = 58,920.33 × 11,200.98
  4. Step 4: Simplify right side
    39,279x = 659,965,437.92
  5. Step 5: Solve for x
    x = 659,965,437.92/39,279
  6. Step 6: Final answer
    x = 16,801.99

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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.