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Finding the Fourth Proportional to 12,879.84, 19,318.68 and 5,954.34

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Solution

The fourth proportional to 12,879.84, 19,318.68 and 5,954.34 is: 8,931.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.84 : 19,318.68 = 5,954.34 : x
  2. Step 2: Convert to fraction form
    12,879.84/19,318.68 = 5,954.34/x
  3. Step 3: Cross multiply
    12,879.84x = 19,318.68 × 5,954.34
  4. Step 4: Simplify right side
    12,879.84x = 115,029,989.07
  5. Step 5: Solve for x
    x = 115,029,989.07/12,879.84
  6. Step 6: Final answer
    x = 8,931.01

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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.