Home / 39,609.18-54,660.96-21,705.84

Finding the Fourth Proportional to 39,609.18, 54,660.96 and 21,705.84

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Solution

The fourth proportional to 39,609.18, 54,660.96 and 21,705.84 is: 29,954.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609.18 : 54,660.96 = 21,705.84 : x
  2. Step 2: Convert to fraction form
    39,609.18/54,660.96 = 21,705.84/x
  3. Step 3: Cross multiply
    39,609.18x = 54,660.96 × 21,705.84
  4. Step 4: Simplify right side
    39,609.18x = 1,186,462,052.01
  5. Step 5: Solve for x
    x = 1,186,462,052.01/39,609.18
  6. Step 6: Final answer
    x = 29,954.22

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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.