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Finding the Fourth Proportional to 43,571.76, 65,357.61 and 12,407.01

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Solution

The fourth proportional to 43,571.76, 65,357.61 and 12,407.01 is: 18,610.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,571.76 : 65,357.61 = 12,407.01 : x
  2. Step 2: Convert to fraction form
    43,571.76/65,357.61 = 12,407.01/x
  3. Step 3: Cross multiply
    43,571.76x = 65,357.61 × 12,407.01
  4. Step 4: Simplify right side
    43,571.76x = 810,892,520.85
  5. Step 5: Solve for x
    x = 810,892,520.85/43,571.76
  6. Step 6: Final answer
    x = 18,610.51

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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.