Home / 43,639.56-65,459.34-12,474.78

Finding the Fourth Proportional to 43,639.56, 65,459.34 and 12,474.78

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Solution

The fourth proportional to 43,639.56, 65,459.34 and 12,474.78 is: 18,712.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,639.56 : 65,459.34 = 12,474.78 : x
  2. Step 2: Convert to fraction form
    43,639.56/65,459.34 = 12,474.78/x
  3. Step 3: Cross multiply
    43,639.56x = 65,459.34 × 12,474.78
  4. Step 4: Simplify right side
    43,639.56x = 816,590,865.45
  5. Step 5: Solve for x
    x = 816,590,865.45/43,639.56
  6. Step 6: Final answer
    x = 18,712.17

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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.