Home / 14,149.12-19,520.32-9,112.64

Finding the Fourth Proportional to 14,149.12, 19,520.32 and 9,112.64

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Solution

The fourth proportional to 14,149.12, 19,520.32 and 9,112.64 is: 12,571.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,149.12 : 19,520.32 = 9,112.64 : x
  2. Step 2: Convert to fraction form
    14,149.12/19,520.32 = 9,112.64/x
  3. Step 3: Cross multiply
    14,149.12x = 19,520.32 × 9,112.64
  4. Step 4: Simplify right side
    14,149.12x = 177,881,648.84
  5. Step 5: Solve for x
    x = 177,881,648.84/14,149.12
  6. Step 6: Final answer
    x = 12,571.92

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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.