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Finding the Fourth Proportional to 14,415.87, 19,894.59 and 8,449.59

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Solution

The fourth proportional to 14,415.87, 19,894.59 and 8,449.59 is: 11,660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.87 : 19,894.59 = 8,449.59 : x
  2. Step 2: Convert to fraction form
    14,415.87/19,894.59 = 8,449.59/x
  3. Step 3: Cross multiply
    14,415.87x = 19,894.59 × 8,449.59
  4. Step 4: Simplify right side
    14,415.87x = 168,101,128.72
  5. Step 5: Solve for x
    x = 168,101,128.72/14,415.87
  6. Step 6: Final answer
    x = 11,660.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.