Home / 43,686.54-65,529.81-12,521.79

Finding the Fourth Proportional to 43,686.54, 65,529.81 and 12,521.79

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Solution

The fourth proportional to 43,686.54, 65,529.81 and 12,521.79 is: 18,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,686.54 : 65,529.81 = 12,521.79 : x
  2. Step 2: Convert to fraction form
    43,686.54/65,529.81 = 12,521.79/x
  3. Step 3: Cross multiply
    43,686.54x = 65,529.81 × 12,521.79
  4. Step 4: Simplify right side
    43,686.54x = 820,550,519.56
  5. Step 5: Solve for x
    x = 820,550,519.56/43,686.54
  6. Step 6: Final answer
    x = 18,782.69

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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.