Home / 39,609.66-54,662.61-21,705.81

Finding the Fourth Proportional to 39,609.66, 54,662.61 and 21,705.81

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Solution

The fourth proportional to 39,609.66, 54,662.61 and 21,705.81 is: 29,954.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609.66 : 54,662.61 = 21,705.81 : x
  2. Step 2: Convert to fraction form
    39,609.66/54,662.61 = 21,705.81/x
  3. Step 3: Cross multiply
    39,609.66x = 54,662.61 × 21,705.81
  4. Step 4: Simplify right side
    39,609.66x = 1,186,496,226.76
  5. Step 5: Solve for x
    x = 1,186,496,226.76/39,609.66
  6. Step 6: Final answer
    x = 29,954.72

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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.