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Finding the Fourth Proportional to 14,364.60, 19,822.91 and 7,991.12

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Solution

The fourth proportional to 14,364.60, 19,822.91 and 7,991.12 is: 11,027.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,364.60 : 19,822.91 = 7,991.12 : x
  2. Step 2: Convert to fraction form
    14,364.60/19,822.91 = 7,991.12/x
  3. Step 3: Cross multiply
    14,364.60x = 19,822.91 × 7,991.12
  4. Step 4: Simplify right side
    14,364.60x = 158,407,252.56
  5. Step 5: Solve for x
    x = 158,407,252.56/14,364.60
  6. Step 6: Final answer
    x = 11,027.61

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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.